gape vs yawn

gape and yawn both are nouns.

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

As verbs, gape and yawn are synonyms defined as:

Other synonyms of gape include yaw.

gape (noun)	yawn (noun)
a stare of amazement (usually with the mouth open)	an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
an expression of openmouthed astonishment

gape (verb)	yawn (verb)
look with amazement; look stupidly	utter a yawn, as from lack of oxygen or when one is tired
be wide open	be wide open