staple fibre vs Australian spelling

staple fibre and Australian spelling both are nouns.

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

staple fibre (noun)	Australian spelling (noun)
a natural fiber (raw cotton, wool, hemp, flax) that can be twisted to form yarn	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')