Australia vs continent

Australia and continent both are nouns.

Word	Noun	Adjective	Verb	Adverb
Australia	Yes	No	No	No
continent	Yes	Yes	No	No

Australia (noun)	continent (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	one of the large landmasses of the earth
the smallest continent; between the South Pacific and the Indian Ocean

Australia (adjective)	continent (adjective)
	having control over urination and defecation
	abstaining from sexual intercourse