hill vs Capitol Hill

hill and Capitol Hill both are nouns.

Word	Noun	Adjective	Verb	Adverb
hill	Yes	No	Yes	No
Capitol Hill	Yes	No	No	No

hill (noun)	Capitol Hill (noun)
(baseball) the slight elevation on which the pitcher stands	a hill in Washington, D.C., where the Capitol Building sits and Congress meets
structure consisting of an artificial heap or bank usually of earth or stones
a local and well-defined elevation of the land

hill (verb)	Capitol Hill (verb)
form into a hill