Guyana vs South American nation

Guyana and South American nation both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guyana	Yes	No	No	No
South American nation	Yes	No	No	No

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