nervous impulse vs nerve impulse

nervous impulse and nerve impulse both are nouns.

Word	Noun	Adjective	Verb	Adverb
nervous impulse	Yes	No	No	No
nerve impulse	Yes	No	No	No

As nouns, nervous impulse and nerve impulse are synonyms defined as:

nervous impulse and nerve impulse: the electrical discharge that travels along a nerve fiber

Other synonyms of nervous impulse include impulse, neural impulse.

nervous impulse (noun)	nerve impulse (noun)
the electrical discharge that travels along a nerve fiber	the electrical discharge that travels along a nerve fiber