dyskinesia vs nervous disorder

dyskinesia and nervous disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
dyskinesia	Yes	No	No	No
nervous disorder	Yes	No	No	No

As nouns, nervous disorder is a hypernym of dyskinesia; that is, nervous disorder is a word with a broader meaning than dyskinesia:

Other hypernyms of dyskinesia include neurological disease, neurological disorder.

dyskinesia (noun)	nervous disorder (noun)
abnormality in performing voluntary muscle movements	a disorder of the nervous system