originate vs lead up

originate and lead up both are verbs.

Word	Noun	Adjective	Verb	Adverb
originate	No	No	Yes	No
lead up	No	No	Yes	No

As verbs, lead up is a hyponym of originate; that is, lead up is a word with a more specific, narrower meaning than originate:

Other hyponyms of originate include initiate, set, date back, date from, go back.

originate (verb)	lead up (verb)
bring into being	set in motion, start an event or prepare the way for
come into existence; take on form or shape
begin a trip at a certain point, as of a plane, train, bus, etc.