calculus vs tartar

calculus and tartar both are nouns.

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

As nouns, calculus and tartar are synonyms defined as:

Other synonyms of calculus include tophus.

calculus (noun)	tartar (noun)
the branch of mathematics that is concerned with limits and with the differentiation and integration of functions	an incrustation that forms on the teeth and gums
a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body	a fiercely vigilant and unpleasant woman
an incrustation that forms on the teeth and gums	a salt used especially in baking powder