retrogress vs turn back

retrogress and turn back both are verbs.

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

As verbs, turn back is a hypernym of retrogress; that is, turn back is a word with a broader meaning than retrogress:

Other hypernyms of retrogress include regress, retrovert, return, revert.

retrogress (verb)	turn back (verb)
go back to bad behavior	go back to a previous state
get worse or fall back to a previous condition	turn inside out or upside down
	hold back, as of a danger or an enemy; check the expansion or influence of
	retrace one's course
	force to go away; used both with concrete and metaphoric meanings