Georgetown vs British Guiana

Georgetown and British Guiana both are nouns.

Word	Noun	Adjective	Verb	Adverb
Georgetown	Yes	No	No	No
British Guiana	Yes	No	No	No

Georgetown (noun)	British Guiana (noun)
port city and the capital and largest city of Guyana	a republic in northeastern South America; formerly part of the British Empire, but it achieved independence from the United Kingdom in 1966
a section of northwestern Washington, D.C.