foetus vs Australian spelling

foetus and Australian spelling both are nouns.

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

foetus (noun)	Australian spelling (noun)
an unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animal	English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')