mascaron vs masque

mascaron

noun
  • A carved, ornamental face, usually human, sometimes frightening or chimeric whose alleged function was originally to frighten away evil spirits so that they would not enter the building. 

masque

noun
  • A facial mask. 

  • A masquerade. 

  • Words and music written for a masque. 

  • A dramatic performance, often performed at court as a royal entertainment, consisting of dancing, dialogue, pantomime and song. 

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