hatful vs flock

hatful and flock both are nouns.

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

As nouns, hatful and flock are synonyms defined as:

hatful and flock: (often followed by `of') a large number or amount or extent

hatful (noun)	flock (noun)
as many or as much as a hat will hold	a group of birds
(often followed by `of') a large number or amount or extent	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

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