immobilization vs immobilize

immobilization is a noun but immobilize is not a noun.

Word	Noun	Adjective	Verb	Adverb
immobilization	Yes	No	No	No
immobilize	No	No	Yes	No

immobilization (noun)	immobilize (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

immobilization (verb)	immobilize (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