cheerful vs smiling

cheerful is not a noun while smiling is a noun.

Word	Noun	Adjective	Verb	Adverb
cheerful	No	Yes	No	No
smiling	Yes	Yes	No	No

cheerful (noun)	smiling (noun)
	a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

cheerful (adjective)	smiling (adjective)
being full of or promoting cheer; having or showing good spirits	smiling with happiness or optimism
pleasantly (even unrealistically) optimistic