• Books and Literature Gadding with Ghouls was a book by Gilderoy Lockhart containing thrilling autobiographical accounts of adventures dealing with various exotic and dangerous beasts, none of which, as it turns out, actually involved the author. Read More
• Glossary Senile, with overtones of being crazy and/or foolish. Read More
• Wizarding culture Galleons are fat gold coins used in the Wizarding World (PS5, HBP13), valued at approximately five British pounds (CR). The serial number identifying the Goblin who cast the coin is stamped around the edge (OP19). Coins of lesser denominations — silver Sickles and bronze Knuts — are also… Read More
• Titles, nicknames, and honorifics When Hagrid comes to get Harry in Hut-On-Rock, he says he is the Keeper of the Keys, which means that he has a large ring of keys which can lock or unlock any door on the Hogwarts grounds (PS4). Presumably Filch has a simliar set of keys,… Read More
• Games, toys, and jokes
• Food and drinks A type of beer sold at the Leaky Cauldron in Diagon Alley, said to have a horrible taste (Pm). Named for Minister of Magic Ulick Gamp, who allowed the famous wizarding tavern to stay open in London after the Statute of Secrecy, and permit the owner to control access to… Read More
• Rules and laws Gamp’s Law of Elemental Transfiguration is a fundamental property of magic which identifies what can be conjured and what cannot. Generally speaking, this axiom states that one cannot create something from nothing. Read More
• Publications This German illuminated manuscript from the 10th century, which depicts the discomfort of broom-riding, is referenced in Quidditch Through the Ages. It mentions the manuscript because records like that one show that witches and wizards in Europe were using flying broomsticks as early as A.D. 962. Read More
• Areas of knowledge The magic supposedly done by “Gernumbli gardensi” or  garden Gnomes, according to Xenophilius Lovegood (DH8). Read More
• Glossary Colloquial form of “Get off”, which in turn means “leave me alone” or “let go.”… Read More
• Communication Ghosts can communicate with each other by ghostly letters. Nearly Headless Nick received one from Sir Patrick Delaney-Podmore of the Headless Hunt. Nick also must have used something of that sort to invite people to his Deathday party, too (CS8). The letters are transparent. Read More
• Art and Culture The ghost orchestra of 30 musical saws played on a black-draped platform at Sir Nicholas de Mimsy-Porpington’s 500th Deathday Party on Oct. 31, 1992. It sounded like a thousand fingernails on a blackboard (CS8). The ghosts guests at the party waltzed to the quavering music. Read More
• Organizations The ghosts’ council at Hogwarts is a group of ghosts including the House ghosts. They vote on matters that concern them. Read More
• Languages The giants speak their own language; some do not speak English, and possibly do not speak any human language. However, enough surviving giants speak English that a translator can be found if the giants care to permit a visitor to communicate (OP20). Read More
• Food and drinks • Glossary 1920s North American slang for alcoholic beverages. The magical variety actually causes the drinker to giggle.  … Read More
• Glossary • Plants Any of several plants related to the carnation that have fragrant flowers. This term crops up occasionally in descriptions of Elizabethan gardens. (AHD)  … Read More
• Food and drinks A drink served at the Three Broomsticks in Hogsmeade. Read More
• Plants Native to the Mediterranean, this water plant looks like a bundle of slimy, greyish-green rat tails. Read More
• Plants • Potion ingredients A mundane edible plant  with roots used to spice up potions. Read More
• Food and drinks Professor McGonagall kept a “tartan” plaid tin on her desk filled with Ginger Newt biscuits (OP12). Read More
• Headlines and advertisements Advertising campaign run by the National Gobstone Association in an effort to recruit new Gobstones players. It featured an unfortunate picture of the current World Champion Kevin Hopwood (Pm). Read More
• Hogwarts academics Glass phials were used as containers in potion-making. Hogwarts first years were required to come to school equipped with phials made of glass or crystals (PS5). Read More
• Glossary A glen is a narrow, deep valley, often with a watercourse running through it. Read More
• Plants • Potion ingredients A mundane flower with a bulb used as a potions ingredient. Read More
• Clothing Gloves are a covering for the hand worn for protection against cold or dirt and typically having separate parts for each finger and the thumb. First-year students are required to buy a pair of thick protective gloves (dragon hide or similar) (PS5). The gloves have a protective function, for example when dealing… Read More
• Quidditch There are three goal posts at each end of a Quidditch pitch – fifty-foot high poles with hoops on them. Read More
• Languages The goblin language. “Bladvak” means “axe” in Gobbledegook (GF24). Miranda Goshawk’s original The Book of Spells was translated into Gobbledegook (BoS). Read More
• Furniture and household items Golden goblets are used on the tables in the Great Hall at Hogwarts (PS7)… Read More
• Magical artifacts The Goblet of Fire is a rough wooden goblet which fills with blue flames when it is time for it to choose champions of the Triwizard Tournament. In order to make the selection of champions completely fair, the decision is left up to a very powerful magic artifact, the… Read More
• Magical artifacts At least some armour in the wizarding world is made by goblins, and can be quite valuable. Read More
• Ministry of Magic The Goblin Liaison Office is part of the Being Division within the Department for the Regulation and Control of Magical Creatures, with the difficult task of being responsible for goblin relations. Read More
• Historical events There were a number of bloody goblin rebellions in the 17th and 18th centuries (JKR-W3). The Rebellion which began in 1752 cost two Ministers for Magic their positions, involved werewolves, and was only suppressed when a seasoned Auror took over the Ministry. Ten years later, in 1762, famed goblin rebel leader Vargot… Read More
• Sports and competitions These objects – playing pieces for the game of the same name – spit a disgusting fluid at players when they lose. Read More
• Symbols A piece of gold jewelry that once belonged to Isolt Sayre’s mother, sister of Gormlaith Gaunt (Pm). Isolt took the brooch with her when she fled to North America, along with her aunt’s wand that once belonged to Salazar Slytherin (Pm). Read More
• Quidditch The Golden Snitch, commonly referred to as a Snitch, is the smallest and fastest ball in the game of Quidditch. Read More
• Magical objects A device created for Lucius Malfoy in order to travel back in time longer than two hours, which was the limit for Ministry Time-Turners (CC4.4). Read More
• Sports and competitions A Muggle game described by Cormack McLoed, manager of the Magpies, as “hitting non-flying balls into holes in the ground.” Alasdair Maddock’s interest in playing golf resulted in his being sacked from the Magpies (DP3). All wizards aren’t as unfamilar with golf as McLoed was, however. When Oliver Wood was… Read More
• Glossary To “play gooseberry” is a British idiom meaning to be an unwanted third person when two other people, particularly two who are having a romantic relationship, wish to be alone together (Oxford English Dictionary). Read More
• Symbols The Gordian Knot symbol is worked into the floor of the Entrance Hall at Ilvermorny Wizarding School. Each student stands on the Gordian Knot waiting for reactions from statues representing the four Houses: Pukwudgie, Thunderbird, Wampus Cat, or Horned River Serpent. The blue and cranberry robes at Ilvermorny have Gordian… Read More
• Hogwarts academics The grading scale for Hogwarts classes, Ordinary Wizarding Level (O.W.L.) exams, Nastily Exhausting Wizarding Test Level (N.E.W.T.) exams, and the Wizards’ Ordinary Magic and Basic Aptitude Test (W.O.M.B.A.T.) are as follows (HBP5): Pass Grades: Outstanding (O) Exceeds Expectations (E) Acceptable (A) Fail Grades: Poor (P)… Read More
• Food and drinks
• Historical events During the “Country or Kind” Debate of 1777, the Great Meeting Chamber in Washington was magically enlarged to house thousands of participating witches and wizards presided over by President Elizabeth McGilliguddy (Pm:MACUSA). Read More
• Symbols Tea leaf symbol from Unfogging the Future which represents death (PA6). The symbol depicts a black dog, which is a death omen from British folklore. Read More
• Headlines and advertisements Headline from a magical newspaper in 1926 referring to Aurors searching for the criminal Gellert Grindelwald. Unknown to MACUSA, he was hiding out disguised in New York City (WFT). Read More
• Headlines and advertisements Headline from a magical newspaper in 1926. Refers to Grindelwald’s attacks on Wizards and Muggles alike in Europe at that time (WFT).  … Read More
• Thing Hanging on the wall of the speakeasy The Blind Pig in 1926 New York City with the caption “GELLERT GRINDELWALD: WANTED FOR NO-MAJ SLAYINGS IN EUROPE” (WFT). Read More
• Transportation To reach the deep underground vaults of Gringotts Wizarding Bank, a goblin whistles for a small cart in which he or she and the visitor ride. Read More
• Occupations A team of adventurous bankers from Gringotts who go out into the world breaking the protective Charms and Curses on old forgotten Wizarding treasure troves. Sometimes referred to as Curse-Breakers (PA1, OP29). Read More
• Headlines and advertisements Letter complaining about bank security from Mallory Twiddle, appearing on the Letters Page of the Daily Prophet (DP1). Read More
• Books and Literature Children’s story, a childhood favorite of Aberforth Dumbledore. He and his brother Albus argued about which story their mother should read to them at bedtime. Albus preferred The Tale of the Three Brothers (TBB/TTB). Read More
• Hogwarts Gryffindor House is one of the four houses at Hogwart into which the students are Sorted when they start their first year. Gryffindor is the Hogwarts house of founder Godric Gryffindor. Gryffindor House places high value on traits such as courage, chivalry, and nerve. During Harry’s time at Hogwarts, the head… Read More
• Sports teams The Gryffindor Quidditch Team of Hogwarts is drawn from the students of Gryffindor House. The team wear robes of scarlet red. Gryffindor traditionally fields a strong team, although they lost the Quidditch Cup to Slytherin for seven years between 1985 and 1991. With the addition of Harry Potter… Read More