origination vs commencement

origination and commencement both are nouns.

Word	Noun	Adjective	Verb	Adverb
origination	Yes	No	No	No
commencement	Yes	No	No	No

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

origination: the act of starting something for the first time; introducing something new
commencement: the act of starting something

Other hypernyms of origination include beginning, start.

origination (noun)	commencement (noun)
the act of starting something for the first time; introducing something new	the act of starting something
an event that is a beginning; a first part or stage of subsequent events	an academic exercise in which diplomas are conferred
	the time at which something is supposed to begin