touch off vs actuate

touch off and actuate both are verbs.

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

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

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

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