social organisation vs Australian spelling

social organisation and Australian spelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
social organisation	Yes	No	No	No
Australian spelling	Yes	No	No	No

social organisation (noun)	Australian spelling (noun)
the people in a society considered as a system organized by a characteristic pattern of relationships	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')