Lushunkou District vs Lushun

Lushunkou District and Lushun both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lushunkou District	Yes	No	No	No
Lushun	Yes	No	No	No

As nouns, Lushunkou District and Lushun are synonyms defined as:

Lushunkou District and Lushun: a major port city in northeastern China on the Liaodong Peninsula; now a part of Luda

Other synonyms of Lushunkou District include Port Arthur.

Lushunkou District (noun)	Lushun (noun)
a major port city in northeastern China on the Liaodong Peninsula; now a part of Luda	a major port city in northeastern China on the Liaodong Peninsula; now a part of Luda