trigger off vs activate

trigger off and activate both are verbs.

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

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

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

trigger off (verb)	activate (verb)
put in motion or move to act	make active or more active
	make (substances) radioactive
	aerate (sewage) so as to favor the growth of organisms that decompose organic matter
	make more adsorptive
	put in motion or move to act