smirk vs smile

smirk and smile both are nouns.

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

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

smirk: a smile expressing smugness or scorn instead of pleasure
smile: a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

Other hypernyms of smirk include grin, grinning, smiling.

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

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

smirk (noun)	smile (noun)
a smile expressing smugness or scorn instead of pleasure	a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

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