mathematics vs converge

mathematics is a noun but converge is not a noun.

Word	Noun	Adjective	Verb	Adverb
mathematics	Yes	No	No	No
converge	No	No	Yes	No

mathematics (noun)	converge (noun)
a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement

mathematics (verb)	converge (verb)
	come together so as to form a single product
	move or draw together at a certain location
	be adjacent or come together
	approach a limit as the number of terms increases without limit