passing note vs musical note

passing note and musical note both are nouns.

Word	Noun	Adjective	Verb	Adverb
passing note	Yes	No	No	No
musical note	Yes	No	No	No

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

passing note: a nonharmonic note inserted for transition between harmonic notes
musical note: a notation representing the pitch and duration of a musical sound

Other hypernyms of passing note include note, tone.

passing note (noun)	musical note (noun)
a nonharmonic note inserted for transition between harmonic notes	a notation representing the pitch and duration of a musical sound