simper vs fleer

simper and fleer both are nouns.

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

As verbs, fleer is a hyponym of simper; that is, fleer is a word with a more specific, narrower meaning than simper:

simper (noun)	fleer (noun)
a silly self-conscious smile	someone who flees from an uncongenial situation
	contempt expressed by mockery in looks or words

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