gooseflesh vs reflex response

gooseflesh and reflex response both are nouns.

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

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

gooseflesh: reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
reflex response: an automatic instinctive unlearned reaction to a stimulus

gooseflesh (noun)	reflex response (noun)
reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation	an automatic instinctive unlearned reaction to a stimulus