rationalise vs prune

rationalise is not a noun while prune is a noun.

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

As verbs, rationalise and prune are synonyms defined as:

Other synonyms of rationalise include cut, rationalize.

rationalise (noun)	prune (noun)
	dried plum

rationalise (verb)	prune (verb)
weed out unwanted or unnecessary things	weed out unwanted or unnecessary things
remove irrational quantities from	cultivate, tend, and cut back the growth of
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