Australian spelling vs archaeology

Australian spelling and archaeology both are nouns.

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

Australian spelling (noun)	archaeology (noun)
English orthography used in Australia (characterized by 'analyse', 'centre', 'usable')	the branch of anthropology that studies prehistoric people and their cultures