immobilisation vs immobilise

immobilisation is a noun but immobilise is not a noun.

Word	Noun	Adjective	Verb	Adverb
immobilisation	Yes	No	No	No
immobilise	No	No	Yes	No

immobilisation (noun)	immobilise (noun)
the act of limiting movement or making incapable of movement
fixation (as by a plaster cast) of a body part in order to promote proper healing

immobilisation (verb)	immobilise (verb)
	cause to be unable to move
	prohibit the conversion or use of (assets)
	convert (assets) into fixed capital
	make defenseless
	to hold fast or prevent from moving
	hold as reserve or withdraw from circulation; of capital