MS vs degenerative disorder

MS and degenerative disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
MS	Yes	No	No	No
degenerative disorder	Yes	No	No	No

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

MS: a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers
degenerative disorder: condition leading to progressive loss of function

Other hypernyms of MS include induration, sclerosis, autoimmune disease, autoimmune disorder.

MS (noun)	degenerative disorder (noun)
a master's degree in science	condition leading to progressive loss of function
a state in the Deep South on the gulf of Mexico; one of the Confederate States during the American Civil War
a chronic progressive nervous disorder involving loss of myelin sheath around certain nerve fibers