fleer vs smirk

fleer and smirk both are nouns.

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

As verbs, smirk is a hypernym of fleer; that is, smirk is a word with a broader meaning than fleer:

Other hypernyms of fleer include simper.

fleer (noun)	smirk (noun)
someone who flees from an uncongenial situation	a smile expressing smugness or scorn instead of pleasure
contempt expressed by mockery in looks or words

fleer (verb)	smirk (verb)
to smirk contemptuously	smile affectedly or derisively