What's the difference between gormandize and gormandizer?

Gormandize

Definition:

• (v. i. & t.) To eat greedily; to swallow voraciously; to feed ravenously or like a glutton.

Example Sentences:

Gormandizer

Definition:

• (n.) A greedy, voracious eater; a gormand; a glutton.

Example Sentences: