simper vs smile

simper and smile both are nouns.

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

As nouns, smile is a hypernym of simper; that is, smile is a word with a broader meaning than simper:

simper: a silly self-conscious smile
smile: a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

Other hypernyms of simper include grin, grinning, smiling.

As verbs, smile is a hypernym of simper; that is, smile is a word with a broader meaning than simper:

simper: smile affectedly or derisively
smile: change one's facial expression by spreading the lips, often to signal pleasure

simper (noun)	smile (noun)
a silly self-conscious smile	a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

simper (verb)	smile (verb)
smile affectedly or derisively	change one's facial expression by spreading the lips, often to signal pleasure
	express with a smile