rheumy vs arthritic

rheumy is not a noun while arthritic is a noun.

Word	Noun	Adjective	Verb	Adverb
rheumy	No	Yes	No	No
arthritic	Yes	Yes	No	No

As adjectives, rheumy and arthritic are synonyms defined as:

Other synonyms of rheumy include creaky, rheumatic, rheumatoid.

rheumy (noun)	arthritic (noun)
	a person afflicted with arthritis

rheumy (adjective)	arthritic (adjective)
of or pertaining to arthritis	of or pertaining to arthritis
moist, damp, wet (especially of air)