repulse vs turn off

repulse is a noun but turn off is not a noun.

Word	Noun	Adjective	Verb	Adverb
repulse	Yes	No	Yes	No
turn off	No	No	Yes	No

As verbs, turn off is a hyponym of repulse; that is, turn off is a word with a more specific, narrower meaning than repulse:

Other hyponyms of repulse include churn up, disgust, nauseate, revolt, sicken, put off.

repulse (noun)	turn off (noun)
an instance of driving away or warding off

repulse (verb)	turn off (verb)
force or drive back	cause to stop operating by disengaging a switch
cause to move back by force or influence	cause to feel intense dislike or distaste
be repellent to; cause aversion in	make a turn