Australian spelling vs vitreous humour

Australian spelling and vitreous humour both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australian spelling	Yes	No	No	No
vitreous humour	Yes	No	No	No

Australian spelling (noun)	vitreous humour (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the clear colorless transparent jelly that fills the posterior chamber of the eyeball