musical mode vs diatonic scale

musical mode and diatonic scale both are nouns.

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

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

musical mode: any of various fixed orders of the various diatonic notes within an octave
diatonic scale: a scale with eight notes in an octave; all but two are separated by whole tones

musical mode (noun)	diatonic scale (noun)
any of various fixed orders of the various diatonic notes within an octave	a scale with eight notes in an octave; all but two are separated by whole tones