retaliation vs revenge

retaliation and revenge both are nouns.

Word	Noun	Adjective	Verb	Adverb
retaliation	Yes	No	No	No
revenge	Yes	No	Yes	No

As nouns, retaliation and revenge are synonyms defined as:

retaliation and revenge: action taken in return for an injury or offense

retaliation (noun)	revenge (noun)
action taken in return for an injury or offense	action taken in return for an injury or offense

retaliation (verb)	revenge (verb)
	take revenge for a perceived wrong