rheumatoid vs creaky

rheumatoid and creaky both are adjectives.

Word	Noun	Adjective	Verb	Adverb
rheumatoid	No	Yes	No	No
creaky	No	Yes	No	No

As adjectives, rheumatoid and creaky are synonyms defined as:

Other synonyms of rheumatoid include arthritic, rheumatic, rheumy.

rheumatoid (adjective)	creaky (adjective)
of or pertaining to arthritis	having a rasping or grating sound
	of or pertaining to arthritis
	worn and broken down by hard use