perch vs Great Britain

perch and Great Britain both are nouns.

Word	Noun	Adjective	Verb	Adverb
perch	Yes	No	Yes	No
Great Britain	Yes	No	No	No

perch (noun)	Great Britain (noun)
spiny-finned freshwater food and game fishes	an island comprising England and Scotland and Wales
any of numerous spiny-finned fishes of various families of the order Perciformes	a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
support consisting of a branch or rod that serves as a resting place (especially for a bird)
any of numerous fishes of America and Europe
an elevated place serving as a seat
a linear measure of 16.5 feet
a square rod of land