smiler vs simperer

smiler and simperer both are nouns.

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

As nouns, simperer is a hyponym of smiler; that is, simperer is a word with a more specific, narrower meaning than smiler:

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

Other hyponyms of smiler include smirker.

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