Wisecracker and Zany

Zany and wisecracker are semantically related in joker topic. In some cases you can use "Zany" instead a noun "Wisecracker", when it comes to topics like joking person, funny person, person who is very funny.

Zany noun - A comically dressed performer (as at a circus) who entertains with playful tricks and ridiculous behavior.

Wisecracker and zany are semantically related in person who is wildly funny topic. Sometimes you can use "Wisecracker" instead a noun "Zany".