horripilation vs inborn reflex

horripilation and inborn reflex both are nouns.

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

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

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

horripilation (noun)	inborn reflex (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