simperer vs smiler

simperer and smiler both are nouns.

Word	Noun	Adjective	Verb	Adverb
simperer	Yes	No	No	No
smiler	Yes	No	No	No

As nouns, smiler is a hypernym of simperer; that is, smiler is a word with a broader meaning than simperer:

simperer: a smiler whose smile is silly and self-conscious and sometimes coy
smiler: a person who smiles

simperer (noun)	smiler (noun)
a smiler whose smile is silly and self-conscious and sometimes coy	the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)
	a person who smiles