mathematics vs truncate

mathematics is a noun but truncate is not a noun.

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

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

mathematics (adjective)	truncate (adjective)
	terminating abruptly by having or as if having an end or point cut off

mathematics (verb)	truncate (verb)
	make shorter as if by cutting off
	approximate by ignoring all terms beyond a chosen one
	replace a corner by a plane