nerve impulse vs nervous impulse

nerve impulse and nervous impulse both are nouns.

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

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

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

Other synonyms of nerve impulse include impulse, neural impulse.

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