turn back vs go back

turn back and go back both are verbs.

Word	Noun	Adjective	Verb	Adverb
turn back	No	No	Yes	No
go back	No	No	Yes	No

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

Other hyponyms of turn back include fall back, lapse, recidivate, regress, relapse, retrogress, resile, recover, recuperate.

turn back (verb)	go back (verb)
go back to a previous state	regain a former condition after a financial loss
turn inside out or upside down	return in thought or speech to something
hold back, as of a danger or an enemy; check the expansion or influence of	belong to an earlier time
retrace one's course
force to go away; used both with concrete and metaphoric meanings