C major scale vs major scale

C major scale and major scale both are nouns.

Word	Noun	Adjective	Verb	Adverb
C major scale	Yes	No	No	No
major scale	Yes	No	No	No

As nouns, major scale is a hypernym of C major scale; that is, major scale is a word with a broader meaning than C major scale:

C major scale: (music) the major scale having no sharps or flats
major scale: a diatonic scale with notes separated by whole tones except for the 3rd and 4th and 7th and 8th

Other hypernyms of C major scale include major diatonic scale.

C major scale (noun)	major scale (noun)
(music) the major scale having no sharps or flats	a diatonic scale with notes separated by whole tones except for the 3rd and 4th and 7th and 8th