yawn vs oscitancy

yawn and oscitancy both are nouns.

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

As nouns, yawn and oscitancy are synonyms defined as:

yawn and oscitancy: an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom

Other synonyms of yawn include oscitance, yawning.

yawn (noun)	oscitancy (noun)
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom	an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
	drowsiness and dullness manifested by yawning

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