Cherbourg-Octeville vs Cherbourg

Cherbourg-Octeville and Cherbourg both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cherbourg-Octeville	Yes	No	No	No
Cherbourg	Yes	No	No	No

As nouns, Cherbourg-Octeville and Cherbourg are synonyms defined as:

Cherbourg-Octeville and Cherbourg: a port town in northwestern France on the English Channel; site of a naval base

Cherbourg-Octeville (noun)	Cherbourg (noun)
a port town in northwestern France on the English Channel; site of a naval base	a port town in northwestern France on the English Channel; site of a naval base