merry andrew vs zany

merry andrew and zany both are nouns.

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

As nouns, zany is a hyponym of merry andrew; that is, zany is a word with a more specific, narrower meaning than merry andrew:

merry andrew: a person who amuses others by ridiculous behavior
zany: a buffoon in one of the old comedies; imitates others for ludicrous effect

Other hyponyms of merry andrew include harlequin, fool, jester, motley fool, whiteface.

merry andrew (noun)	zany (noun)
a person who amuses others by ridiculous behavior	a buffoon in one of the old comedies; imitates others for ludicrous effect
	a man who is a stupid incompetent fool

merry andrew (adjective)	zany (adjective)
	ludicrous, foolish
	like a clown