crystallisation vs crystallise

crystallisation is a noun but crystallise is not a noun.

Word	Noun	Adjective	Verb	Adverb
crystallisation	Yes	No	No	No
crystallise	No	No	Yes	No

crystallisation (noun)	crystallise (noun)
the formation of crystals

crystallisation (verb)	crystallise (verb)
	cause to form crystals or assume crystalline form
	cause to take on a definite and clear shape
	make free from confusion or ambiguity; make clear