The difference between Ham and Overactor

When used as nouns, ham means the region back of the knee joint, whereas overactor means someone who overacts.

Ham is also verb with the meaning: to overact.

check bellow for the other definitions of Ham and Overactor

Ham as a noun (anatomy):

The region back of the knee joint; the popliteal space; the hock.
Ham as a noun (countable):

A thigh and buttock of an animal slaughtered for meat.
Ham as a noun (uncountable):

Meat from the thigh of a hog cured for food.

Examples:

"a little piece of ham for the cat"
Ham as a noun:

The back of the thigh.
Ham as a noun (internet, informal, uncommon):

Electronic mail that is wanted; mail that is not spam or junk mail.

Examples:

"ant spam"

Ham as a noun (acting):

An overacting or amateurish performer; an actor with an especially showy or exaggerated style.
Ham as a noun (radio):

An amateur radio operator.

Ham as a verb (acting):

To overact; to act with exaggerated emotions.