motet vs paean

motet

noun
  • A composition adapted to sacred words in the elaborate polyphonic church style; an anthem. 

paean

noun
  • A chant or song, especially a hymn of thanksgiving for deliverance or victory, to Apollo or sometimes another god or goddess; hence any song sung to solicit victory in battle. 

  • Any loud and joyous song; a song of triumph. 

  • An enthusiastic expression of praise. 

verb
  • To sing a paean; to praise. 

How often have the words motet and paean occurred in a corpus of books? (source: Google Ngram Viewer )