fleer vs doer

fleer and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
fleer	Yes	No	Yes	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of fleer; that is, doer is a word with a broader meaning than fleer:

Other hypernyms of fleer include actor, worker.

fleer (noun)	doer (noun)
someone who flees from an uncongenial situation	a person who acts and gets things done
contempt expressed by mockery in looks or words

fleer (verb)	doer (verb)
to smirk contemptuously