Nan Ling vs Nan Mountains

Nan Ling and Nan Mountains both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nan Ling	Yes	No	No	No
Nan Mountains	Yes	No	No	No

As nouns, Nan Ling and Nan Mountains are synonyms defined as:

Nan Ling and Nan Mountains: a mountain range in southeastern China running generally east to west

Nan Ling (noun)	Nan Mountains (noun)
a mountain range in southeastern China running generally east to west	a mountain range in southeastern China running generally east to west