turn back vs shoo off

turn back and shoo off both are verbs.

Word	Noun	Adjective	Verb	Adverb
turn back	No	No	Yes	No
shoo off	No	No	Yes	No

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

turn back: force to go away; used both with concrete and metaphoric meanings
shoo off: drive away by crying `shoo!'

Other hyponyms of turn back include fire, clear the air, banish, shoo, shoo away.

turn back (verb)	shoo off (verb)
go back to a previous state	drive away by crying `shoo!'
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