Australia vs Northern Territory

Australia and Northern Territory both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australia	Yes	No	No	No
Northern Territory	Yes	No	No	No

Australia (noun)	Northern Territory (noun)
a nation occupying the whole of the Australian continent; Aboriginal tribes are thought to have migrated from southeastern Asia 20,000 years ago; first Europeans were British convicts sent there as a penal colony	a territory in north central Australia
the smallest continent; between the South Pacific and the Indian Ocean