actuate vs trigger

actuate is not a noun while trigger is a noun.

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

As verbs, actuate and trigger are synonyms defined as:

Other synonyms of actuate include activate, set off, spark, spark off, touch off, trigger off, trip.

actuate (noun)	trigger (noun)
	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

actuate (verb)	trigger (verb)
put in motion or move to act	release or pull the trigger on
give an incentive for action	put in motion or move to act