immobilise vs Australian spelling

immobilise is not a noun while Australian spelling is a noun.

Word	Noun	Adjective	Verb	Adverb
immobilise	No	No	Yes	No
Australian spelling	Yes	No	No	No

immobilise (noun)	Australian spelling (noun)
	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')

immobilise (verb)	Australian spelling (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