ceil vs plafond

ceil

noun
  • A ceiling. 

verb
  • To set a higher bound. 

  • To line or finish (a surface, such as a wall), with plaster, stucco, thin boards, or similar. 

plafond

noun
  • A ceiling, especially one that is ornately decorated. 

  • The tibial plafond. 

  • A painting or decoration on a ceiling. 

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