port of entry vs Erie

port of entry and Erie both are nouns.

Word	Noun	Adjective	Verb	Adverb
port of entry	Yes	No	No	No
Erie	Yes	No	No	No

port of entry (noun)	Erie (noun)
a port in the United States where customs officials are stationed to oversee the entry and exit of people and merchandise	a port city on Lake Erie in northwestern Pennsylvania
	the 4th largest of the Great Lakes; it is linked to the Hudson River by the New York State Barge Canal
	a member of an Iroquoian people formerly living on the south shore of Lake Erie in northern Ohio and northwest Pennsylvania and western New York