goosebump vs pilomotor reflex

goosebump and pilomotor reflex both are nouns.

Word	Noun	Adjective	Verb	Adverb
goosebump	Yes	No	No	No
pilomotor reflex	Yes	No	No	No

As nouns, goosebump and pilomotor reflex are synonyms defined as:

goosebump and pilomotor reflex: reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation

Other synonyms of goosebump include goose bump, goose pimple, goose skin, gooseflesh, horripilation.

goosebump (noun)	pilomotor reflex (noun)
reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation	reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation