degenerative arthritis vs degenerative joint disease

degenerative arthritis and degenerative joint disease both are nouns.

Word	Noun	Adjective	Verb	Adverb
degenerative arthritis	Yes	No	No	No
degenerative joint disease	Yes	No	No	No

As nouns, degenerative arthritis and degenerative joint disease are synonyms defined as:

degenerative arthritis and degenerative joint disease: chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age

Other synonyms of degenerative arthritis include osteoarthritis.

degenerative arthritis (noun)	degenerative joint disease (noun)
chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age	chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age