Centaurs are half-man, half-horse creatures which live in the Forbidden Forest next to Hogwarts. Firenze was one centaur who once taught Astronomy at Hogwarts.

The Chamber of Secrets is a sewer-like underground area underneath Hogwarts castle, where the basilisk of Hogwarts "called" home. It is found by going into the girl's bathroom somewhere near the sinks and using Parseltongue to open the trapdoor beneath the sinks.

A Chaser is a Quidditch player who tosses the Quaffle back and forth with other Chasers of their team in order to score a goal in the hoop.