yawner vs yawn

yawner and yawn both are nouns.

Word	Noun	Adjective	Verb	Adverb
yawner	Yes	No	No	No
yawn	Yes	No	Yes	No

yawner (noun)	yawn (noun)
a person who yawns	an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom

yawner (verb)	yawn (verb)
	utter a yawn, as from lack of oxygen or when one is tired
	be wide open