sternutation vs reflex

sternutation and reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
sternutation	Yes	No	No	No
reflex	Yes	Yes	No	No

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

sternutation: a symptom consisting of the involuntary expulsion of air from the nose
reflex: an automatic instinctive unlearned reaction to a stimulus

sternutation (noun)	reflex (noun)
a symptom consisting of the involuntary expulsion of air from the nose	an automatic instinctive unlearned reaction to a stimulus

sternutation (adjective)	reflex (adjective)
	without volition or conscious control