Australian spelling vs large-capitalisation

Australian spelling is a noun but large-capitalisation is not a noun.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
large-capitalisation	No	Yes	No	No

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

Australian spelling (adjective)	large-capitalisation (adjective)
	of stocks of companies with a market capitalization of five billion dollars or more