retaliate vs strike back

retaliate and strike back both are verbs.

Word	Noun	Adjective	Verb	Adverb
retaliate	No	No	Yes	No
strike back	No	No	Yes	No

As verbs, retaliate and strike back are synonyms defined as:

retaliate and strike back: make a counterattack and return like for like, especially evil for evil

retaliate (verb)	strike back (verb)
make a counterattack and return like for like, especially evil for evil	make a counterattack and return like for like, especially evil for evil
take revenge for a perceived wrong