ruggedisation vs Australian spelling

ruggedisation and Australian spelling both are nouns.

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

ruggedisation (noun)	Australian spelling (noun)
the act of making a piece of equipment rugged (strengthening to resist wear or abuse)	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')