goose bump vs goosebump

goose bump and goosebump both are nouns.

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

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

goose bump and goosebump: 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, goose skin, gooseflesh, horripilation, pilomotor reflex.

goose bump (noun)	goosebump (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