W is for:

WAND: Well we wouldn't be magical without them. Mine is Sycamore and Dragon heartstring although I do have a second that is made of Beech with a blood core.

WEASLEY’S WIZARDING WHEEZES: The best joke shop in the Wizarding world. I have worked there on several occasions and enjoy my time when I do.

WEREWOLF: A person that has a disease that means they are unable to control the transformation of their body. They transform with the full moon. Remus Lupin was a Werewolf and professor at Hogwarts.

WHOMPPING WILLOW: A large tree outside of Hogwarts that covered a passageway to the Shrieking Shack.

WINGARDIUM LEVIOSA: A levitation charm.

WINGED HORSE: Beautiful creatures.

WIT: A characteristic of Ravenclaw students.

WITCH: A female magical person.

WIZARD: A male magical person.