What's the difference between i.e. and e.g.?
a lyric poem of dispute or personal abuse composed by Provencal troubadours in which two opponents speak alternate stanzas, lines, or groups of lines usually identical in structure. In some cases these debates were imaginary, and both sides of the issue were composed by the same person. The tenson was a specific form of debat, a kind of medieval poetic contest. The form later spread to Italy, where it became popular among the poets of the dolce stil nuovo, including Dante. Compare partimen.