Cascade Mountains vs Cascades

Cascade Mountains and Cascades both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cascade Mountains	Yes	No	No	No
Cascades	Yes	No	No	No

As nouns, Cascade Mountains and Cascades are synonyms defined as:

Cascade Mountains and Cascades: a mountain range in the northwestern United States extending through Washington and Oregon and northern California; a part of the Coast Range

Other synonyms of Cascade Mountains include Cascade Range.

Cascade Mountains (noun)	Cascades (noun)
a mountain range in the northwestern United States extending through Washington and Oregon and northern California; a part of the Coast Range	a mountain range in the northwestern United States extending through Washington and Oregon and northern California; a part of the Coast Range