I'll give you the two definitions,
Motet
In classical music, a motet is a highly varied choral musical composition. The motetwas one of the pre-eminent polyphonic forms of Renaissance music.
- sacred
- latin text
- male voices
- for glory of God
- For professionals
- no nonsense syllables
- Flemish composers
Madrigal
a part-song for several voices, especially one of the Renaissance period, typically arranged in elaborate counterpoint and without instrumental
accompaniment.
- secular
- vernecular-language of people
- Male and female voice
- For entertainment of singers
- for amateurs
- nonsense syllables
- English Composers
With the following information given above, should help you get a clear image of the two.
