Australian spelling vs lexicalisation

Australian spelling and lexicalisation both are nouns.

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

Australian spelling (noun)	lexicalisation (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the process of making a word to express a concept