smiler vs smile

smiler and smile both are nouns.

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

smiler (noun)	smile (noun)
the human face (`kisser' and `smiler' and `mug' are informal terms for `face' and `phiz' is British)	a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
a person who smiles

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