math vs calculus

math and calculus both are nouns.

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

math (noun)	calculus (noun)
a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement	the branch of mathematics that is concerned with limits and with the differentiation and integration of functions
	a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
	an incrustation that forms on the teeth and gums