decriminalisation vs Australian spelling

decriminalisation and Australian spelling both are nouns.

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

decriminalisation (noun)	Australian spelling (noun)
legislation that makes something legal that was formerly illegal	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')