crawler vs lackey

crawler and lackey both are nouns.

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

As nouns, crawler and lackey are synonyms defined as:

crawler and lackey: a person who tries to please someone in order to gain a personal advantage

Other synonyms of crawler include ass-kisser, sycophant, toady.

crawler (noun)	lackey (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 male servant (especially a footman)
a person who tries to please someone in order to gain a personal advantage	a person who tries to please someone in order to gain a personal advantage
a person who crawls or creeps along the ground