South American nation vs British Guiana

South American nation and British Guiana both are nouns.

Word	Noun	Adjective	Verb	Adverb
South American nation	Yes	No	No	No
British Guiana	Yes	No	No	No

South American nation (noun)	British Guiana (noun)
any one of the countries occupying the South American continent	a republic in northeastern South America; formerly part of the British Empire, but it achieved independence from the United Kingdom in 1966