bastardise vs Australian spelling

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

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

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

bastardise (verb)	Australian spelling (verb)
declare a child to be illegitimate
change something so that its value declines; for example, art forms