waken vs bring back

waken and bring back both are verbs.

Word	Noun	Adjective	Verb	Adverb
waken	No	No	Yes	No
bring back	No	No	Yes	No

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

Other hyponyms of waken include reawaken, bring around, bring round, bring to, call.

waken (verb)	bring back (verb)
stop sleeping	call to mind
cause to become awake or conscious	bring back to the point of departure