Stalactite / Stalagmite

The Mirror of Erised

Tom Marvolo Riddle

O.W.Ls / N.E.W.Ts

Diagon Alley / Knockturn Alley

The 'Knight Bus'

A Peck/ Pack of Owls

'Let Your Hair Down'

'Once or twice a minute all summer'

Uranus

Slughorn, Slug Club, Sluggish

Fleur / Phlegm

U-NO-POO