self-acting vs self-activating

self-acting and self-activating both are adjectives.

Word	Noun	Adjective	Verb	Adverb
self-acting	No	Yes	No	No
self-activating	No	Yes	No	No

As adjectives, self-acting and self-activating are synonyms defined as:

self-acting and self-activating: designed to activate or move or regulate itself

Other synonyms of self-acting include self-moving, self-regulating.

self-acting (adjective)	self-activating (adjective)
designed to activate or move or regulate itself	designed to activate or move or regulate itself