flatterer vs crawler

flatterer and crawler both are nouns.

Word	Noun	Adjective	Verb	Adverb
flatterer	Yes	No	No	No
crawler	Yes	No	No	No

As nouns, crawler is a hyponym of flatterer; that is, crawler is a word with a more specific, narrower meaning than flatterer:

flatterer: a person who uses flattery
crawler: a person who tries to please someone in order to gain a personal advantage

Other hyponyms of flatterer include ass-kisser, lackey, sycophant, toady.

flatterer (noun)	crawler (noun)
a person who uses flattery	terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers
	a person who tries to please someone in order to gain a personal advantage
	a person who crawls or creeps along the ground