desert vs Australian Desert

desert and Australian Desert both are nouns.

Word	Noun	Adjective	Verb	Adverb
desert	Yes	No	Yes	No
Australian Desert	Yes	No	No	No

desert (noun)	Australian Desert (noun)
arid land with little or no vegetation	general name given to all desert areas in Australia
(usually plural) a person's deservingness of or entitlement to reward or punishment

desert (verb)	Australian Desert (verb)
leave someone who needs or counts on you; leave in the lurch
leave behind
desert (a cause, a country or an army), often in order to join the opposing cause, country, or army