tone-beginning vs commencement

tone-beginning and commencement both are nouns.

Word	Noun	Adjective	Verb	Adverb
tone-beginning	Yes	No	No	No
commencement	Yes	No	No	No

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

Other hypernyms of tone-beginning include beginning, start.

tone-beginning (noun)	commencement (noun)
a decisive manner of beginning a musical tone or phrase	the act of starting something
	an academic exercise in which diplomas are conferred
	the time at which something is supposed to begin