Australian spelling vs natural fibre

Australian spelling and natural fibre both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
natural fibre	Yes	No	No	No

Australian spelling (noun)	natural fibre (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	fiber derived from plants or animals