goose bump vs goose skin

goose bump and goose skin both are nouns.

Word	Noun	Adjective	Verb	Adverb
goose bump	Yes	No	No	No
goose skin	Yes	No	No	No

As nouns, goose bump and goose skin are synonyms defined as:

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

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

goose bump (noun)	goose skin (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