decarburise vs Australian spelling

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

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

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

decarburise (verb)	Australian spelling (verb)
remove carbon from (an engine)