depersonalisation vs depersonalise

depersonalisation is a noun but depersonalise is not a noun.

Word	Noun	Adjective	Verb	Adverb
depersonalisation	Yes	No	No	No
depersonalise	No	No	Yes	No

depersonalisation (noun)	depersonalise (noun)
representing a human being as a physical thing deprived of personal qualities or individuality
emotional dissociative disorder in which there is loss of contact with your own personal reality accompanied by feelings of unreality and strangeness
(existentialism) a loss of personal identity; a feeling of being an anonymous cog in an impersonal social machine

depersonalisation (verb)	depersonalise (verb)
	make impersonal or present as an object