causation vs initiation

causation and initiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
causation	Yes	No	No	No
initiation	Yes	No	No	No

As nouns, initiation is a hyponym of causation; that is, initiation is a word with a more specific, narrower meaning than causation:

Other hyponyms of causation include sending, induction, trigger, coercion, compulsion, influence, inducement, inducing.

causation (noun)	initiation (noun)
the act of causing something to happen	the act of starting something for the first time; introducing something new
	an act that sets in motion some course of events
	wisdom as evidenced by the possession of knowledge
	a formal entry into an organization or position or office