diatonic scale vs musical scale

diatonic scale and musical scale both are nouns.

Word	Noun	Adjective	Verb	Adverb
diatonic scale	Yes	No	No	No
musical scale	Yes	No	No	No

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

diatonic scale: a scale with eight notes in an octave; all but two are separated by whole tones
musical scale: (music) a series of notes differing in pitch according to a specific scheme (usually within an octave)

Other hypernyms of diatonic scale include scale.

diatonic scale (noun)	musical scale (noun)
a scale with eight notes in an octave; all but two are separated by whole tones	(music) a series of notes differing in pitch according to a specific scheme (usually within an octave)