disjoint vs mathematics

disjoint is not a noun while mathematics is a noun.

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

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

disjoint (adjective)	mathematics (adjective)
having no elements in common

disjoint (verb)	mathematics (verb)
become separated, disconnected or disjoint
make disjoint, separated, or disconnected; undo the joining of
separate at the joints
part; cease or break association with