Ron
Filch
third floor
Professor Quirrell
Mrs Norris
Weasley twins
wand
greenhouses
Herbology
witch
Professor Sprout
History of Magic
Professor Binns
staff room
Binns
Emeric the Evil
Uric the Oddball
Professor Flitwick
Charms
wizard
Professor McGonagall
Transfiguration
Hermione Granger
Hermione
Defence Against the Dark Arts
Quirrell
Romania
Seamus Finnigan
Muggle
Great Hall
Potions
Slytherins
Snape
Head of Slytherin house
McGonagall
Head of Gryffindor house
Hedwig
owlery
Hagrid
Professor Snape
Flitwick
Harry Potter
Draco Malfoy
Crabbe and Goyle
potion-making
Potter
powdered root of asphodel
infusion of wormwood
bezoar
Malfoy
the Dursleys
One Thousand Magical Herbs and Fungi
monkshood
wolfsbane
Seamus
Draught of Living Death
aconite
point
Gryffindor house
Gryffindors
cloak
dried nettles
snake fangs
horned slugs
Neville
Seamus
cauldron
porcupine quills
hospital wing
quills
Gryffindor
Fred and George
Forbidden Forest
Fang
boarhound
Weasley
Forest
rock cakes
robes
Charlie
dragons
Daily Prophet 
Gringotts
goblins
vault
spokesgoblin
vault seven hundred and thirteen