goofball vs merry andrew

goofball and merry andrew both are nouns.

Word	Noun	Adjective	Verb	Adverb
goofball	Yes	No	No	No
merry andrew	Yes	No	No	No

As nouns, goofball and merry andrew are synonyms defined as:

goofball and merry andrew: a person who amuses others by ridiculous behavior

Other synonyms of goofball include buffoon, clown, goof.

goofball (noun)	merry andrew (noun)
a man who is a stupid incompetent fool	a person who amuses others by ridiculous behavior
a person who amuses others by ridiculous behavior