champaign vs Nullarbor Plain

champaign and Nullarbor Plain both are nouns.

Word	Noun	Adjective	Verb	Adverb
champaign	Yes	No	No	No
Nullarbor Plain	Yes	No	No	No

champaign (noun)	Nullarbor Plain (noun)
extensive tract of level open land	a vast arid plain of southern Australia stretching inland from the Great Australian Bight; has sparse vegetation and no surface water and is almost uninhabited; the site of a major rocket research center