tophus vs tartar

tophus and tartar both are nouns.

Word	Noun	Adjective	Verb	Adverb
tophus	Yes	No	No	No
tartar	Yes	No	No	No

As nouns, tophus and tartar are synonyms defined as:

Other synonyms of tophus include calculus.

tophus (noun)	tartar (noun)
an incrustation that forms on the teeth and gums	an incrustation that forms on the teeth and gums
a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout	a fiercely vigilant and unpleasant woman
	a salt used especially in baking powder