misbehaviour vs Australian spelling

misbehaviour and Australian spelling both are nouns.

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

misbehaviour (noun)	Australian spelling (noun)
improper or wicked or immoral behavior	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')