How was the Medieval motet different from the Renaissance motet?

Medieval Motet is poly-textual and it can use a musical instrument. There are only two textures to hear in the medieval music. One is solo and poly-textual music. It doesn’t have homophones on purpose. On the other hand, while the Renaissance Motet is a single Latin text and only a cappella. Renaissance polyphony was based on nonstop imitation. Renaissance music used what we are known to be a cantus firmus, most particularly on its mass, but it is not certainly in the tenor portion.