crawler vs adulator

crawler and adulator both are nouns.

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

As nouns, adulator is a hypernym of crawler; that is, adulator is a word with a broader meaning than crawler:

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

Other hypernyms of crawler include flatterer.

crawler (noun)	adulator (noun)
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 uses flattery
a person who tries to please someone in order to gain a personal advantage
a person who crawls or creeps along the ground