lackey vs flatterer

lackey and flatterer both are nouns.

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

As nouns, flatterer is a hypernym of lackey; that is, flatterer is a word with a broader meaning than lackey:

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

Other hypernyms of lackey include adulator.

lackey (noun)	flatterer (noun)
a male servant (especially a footman)	a person who uses flattery
a person who tries to please someone in order to gain a personal advantage