Reiter's disease vs Reiter's syndrome

Reiter's disease and Reiter's syndrome both are nouns.

Word	Noun	Adjective	Verb	Adverb
Reiter's disease	Yes	No	No	No
Reiter's syndrome	Yes	No	No	No

As nouns, Reiter's disease and Reiter's syndrome are synonyms defined as:

Reiter's disease and Reiter's syndrome: an inflammatory syndrome (etiology unknown) predominantly in males; characterized by arthritis and conjunctivitis and urethritis

Reiter's disease (noun)	Reiter's syndrome (noun)
an inflammatory syndrome (etiology unknown) predominantly in males; characterized by arthritis and conjunctivitis and urethritis	an inflammatory syndrome (etiology unknown) predominantly in males; characterized by arthritis and conjunctivitis and urethritis