Owlery - cold, drafty, circular stone room, top of West Tower has hundreds of owls
Hogwarts School of Witchcraft and Wizardry for students 11 to 17, huge, rambling, scary-looking castle, with towers and battlements
Shrieking Shack - Hogsmeade haunted house
Azkaban - island prison guarded by Dementors
Nearly-Headless Nick - Gryffindor resident ghost, is Sir Nicholas de Mimsy-Porpington
Howler - loud, scolding message brought by owl
Thestral - great, black, winged horses with a dragonish face, neck, and skeletal body.
Crabbe, Vincent - one of Malfoy's large, slow-witted, thuggish cronies
Zonko's - a joke shop in Hogsmeade