yawn vs oscitance

yawn and oscitance both are nouns.

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

As nouns, yawn and oscitance are synonyms defined as:

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

Other synonyms of yawn include oscitancy, yawning.

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