originate vs start

originate is not a noun while start is a noun.

Word	Noun	Adjective	Verb	Adverb
originate	No	No	Yes	No
start	Yes	No	Yes	No

As verbs, originate and start are synonyms defined as:

Other synonyms of originate include initiate.

As verbs, start is a hypernym of originate; that is, start is a word with a broader meaning than originate:

Other hypernyms of originate include begin.

originate (noun)	start (noun)
	the act of starting something
	a sudden involuntary movement
	a turn to be a starter (in a game at the beginning)
	the advantage gained by beginning early (as in a race)
	a signal to begin (as in a race)
	the beginning of anything
	a line indicating the location of the start of a race or a game
	the time at which something is supposed to begin

originate (verb)	start (verb)
bring into being	take the first step or steps in carrying out an action
come into existence; take on form or shape	set in motion, cause to start
begin a trip at a certain point, as of a plane, train, bus, etc.	play in the starting lineup
	bring into being
	get off the ground
	begin or set in motion
	get going or set in motion
	depart for someplace
	bulge outward
	move or jump suddenly, as if in surprise or alarm
	begin work or acting in a certain capacity, office or job
	begin an event that is implied and limited by the nature or inherent function of the direct object
	have a beginning, in a temporal, spatial, or evaluative sense
	have a beginning characterized in some specified way