oscitance vs inborn reflex

oscitance and inborn reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
oscitance	Yes	No	No	No
inborn reflex	Yes	No	No	No

As nouns, inborn reflex is a hypernym of oscitance; that is, inborn reflex is a word with a broader meaning than oscitance:

oscitance: an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
inborn reflex: an automatic instinctive unlearned reaction to a stimulus

oscitance (noun)	inborn reflex (noun)
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom	an automatic instinctive unlearned reaction to a stimulus
drowsiness and dullness manifested by yawning