Parkinson's disease vs paralysis agitans

Parkinson's disease and paralysis agitans both are nouns.

Word	Noun	Adjective	Verb	Adverb
Parkinson's disease	Yes	No	No	No
paralysis agitans	Yes	No	No	No

As nouns, Parkinson's disease and paralysis agitans are synonyms defined as:

Parkinson's disease and paralysis agitans: a degenerative disorder of the central nervous system characterized by tremor and impaired muscular coordination

Other synonyms of Parkinson's disease include Parkinson's, Parkinson's syndrome, Parkinsonism, shaking palsy.

Parkinson's disease (noun)	paralysis agitans (noun)
a degenerative disorder of the central nervous system characterized by tremor and impaired muscular coordination	a degenerative disorder of the central nervous system characterized by tremor and impaired muscular coordination