trigger off vs actuate

trigger off and actuate both are verbs.

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

As verbs, trigger off and actuate are synonyms defined as:

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

trigger off (verb)	actuate (verb)
put in motion or move to act	put in motion or move to act
	give an incentive for action