Lowlands vs Scottish Lowlands

Lowlands and Scottish Lowlands both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lowlands	Yes	No	No	No
Scottish Lowlands	Yes	No	No	No

As nouns, Lowlands and Scottish Lowlands are synonyms defined as:

Lowlands and Scottish Lowlands: the southern part of Scotland that is not mountainous

Other synonyms of Lowlands include Lowlands of Scotland.

Lowlands (noun)	Scottish Lowlands (noun)
the southern part of Scotland that is not mountainous	the southern part of Scotland that is not mountainous