turn back vs banish

turn back and banish both are verbs.

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

As verbs, banish is a hyponym of turn back; that is, banish 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
banish: drive away

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

turn back (verb)	banish (verb)
go back to a previous state	drive away
turn inside out or upside down	expel, as if by official decree
hold back, as of a danger or an enemy; check the expansion or influence of	expel from a community or group
retrace one's course	ban from a place of residence, as for punishment
force to go away; used both with concrete and metaphoric meanings