tone ending vs ending

tone ending and ending both are nouns.

Word	Noun	Adjective	Verb	Adverb
tone ending	Yes	No	No	No
ending	Yes	No	No	No

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

tone ending: (music) the act or manner of terminating a musical phrase or tone
ending: the act of ending something

Other hypernyms of tone ending include conclusion, termination.

tone ending (noun)	ending (noun)
(music) the act or manner of terminating a musical phrase or tone	the act of ending something
	the end of a word (a suffix or inflectional ending or final morpheme)
	the last section of a communication
	event whose occurrence ends something
	the point in time at which something ends