flock vs animal group

flock and animal group both are nouns.

Word	Noun	Adjective	Verb	Adverb
flock	Yes	No	Yes	No
animal group	Yes	No	No	No

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

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

flock (noun)	animal group (noun)
a group of birds	a group of animals
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

flock (verb)	animal group (verb)
come together as in a cluster or flock
move as a crowd or in a group