"retaliation for wrongs real or fancied, act of doing harm or injury in return for wrong or injury suffered," 1540s, from French revenge, a back-formation from revengier (see revenge (v.)). Hence "vindictive feeling, desire to be revenged."
in rhetoric, "comparison, metaphor," according to Century Dictionary, "especially a formal simile, as in poetry or poetic prose, taken from a present or imagined object or event: distinguished from a paradigm, or comparison with a real past event," 1580s, from Greek parabolē "comparison" (see parable).
perennial herb of the mint family, formerly cultivated for medicinal purposes, 1520s, alteration by folk etymology of Anglo-French puliol real; for second element see royal; the first element ultimately is from Latin puleium "thyme," a word of unknown origin. Later also applied to an American plant.