initiate vs originate

initiate is a noun but originate is not a noun.

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

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

Other hypernyms of initiate include initiate, start.

As verbs, initiate and originate are synonyms defined as:

Other synonyms of initiate include start.

initiate (noun)	originate (noun)
people who have been introduced to the mysteries of some field or activity
someone who has been admitted to membership in a scholarly field
someone new to a field or activity

initiate (verb)	originate (verb)
set in motion, start an event or prepare the way for	bring into being
bring up a topic for discussion	come into existence; take on form or shape
take the lead or initiative in; participate in the development of	begin a trip at a certain point, as of a plane, train, bus, etc.
bring into being
accept people into an exclusive society or group, usually with some rite