gaggle vs flock

gaggle and flock both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaggle	Yes	No	Yes	No
flock	Yes	No	Yes	No

As nouns, flock is a hypernym of gaggle; that is, flock is a word with a broader meaning than gaggle:

gaggle (noun)	flock (noun)
a flock of geese	a group of birds
	a group of sheep or goats
	a church congregation guided by a pastor
	an orderly crowd
	(often followed by `of') a large number or amount or extent

gaggle (verb)	flock (verb)
make a noise characteristic of a goose	come together as in a cluster or flock
	move as a crowd or in a group