passing tone vs musical note

passing tone and musical note both are nouns.

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

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

passing tone: 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 tone include note, tone.

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