causation vs trigger

causation and trigger both are nouns.

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

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

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

causation (noun)	trigger (noun)
the act of causing something to happen	an act that sets in motion some course of events
	lever that activates the firing mechanism of a gun
	a device that activates or releases or causes something to happen

causation (verb)	trigger (verb)
	release or pull the trigger on
	put in motion or move to act