rationalise vs maths

rationalise is not a noun while maths is a noun.

Word	Noun	Adjective	Verb	Adverb
rationalise	No	No	Yes	No
maths	Yes	No	No	No

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

rationalise (verb)	maths (verb)
weed out unwanted or unnecessary things
remove irrational quantities from
think rationally; employ logic or reason
defend, explain, clear away, or make excuses for by reasoning
structure and run according to rational or scientific principles in order to achieve desired results