Guyana vs South American country

Guyana and South American country both are nouns.

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

Guyana (noun)	South American country (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