neurological disease vs nervous disorder

neurological disease and nervous disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
neurological disease	Yes	No	No	No
nervous disorder	Yes	No	No	No

As nouns, neurological disease and nervous disorder are synonyms defined as:

neurological disease and nervous disorder: a disorder of the nervous system

Other synonyms of neurological disease include neurological disorder.

neurological disease (noun)	nervous disorder (noun)
a disorder of the nervous system	a disorder of the nervous system