sternutation vs reflex response

sternutation and reflex response both are nouns.

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

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

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

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