trigger off vs spark off

trigger off and spark off both are verbs.

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

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

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

trigger off (verb)	spark off (verb)
put in motion or move to act	put in motion or move to act