familiarisation vs Australian spelling

familiarisation and Australian spelling both are nouns.

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

familiarisation (noun)	Australian spelling (noun)
the experience of becoming familiar with something	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')