Pennines vs Pennine Chain

Pennines and Pennine Chain both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pennines	Yes	No	No	No
Pennine Chain	Yes	No	No	No

As nouns, Pennines and Pennine Chain are synonyms defined as:

Pennines and Pennine Chain: a system of hills in Britain that extend from the Scottish border in the north to the Trent River in the south; forms the watershed for English rivers

Pennines (noun)	Pennine Chain (noun)
a system of hills in Britain that extend from the Scottish border in the north to the Trent River in the south; forms the watershed for English rivers	a system of hills in Britain that extend from the Scottish border in the north to the Trent River in the south; forms the watershed for English rivers