plafond vs vaulting

plafond

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

  • The tibial plafond. 

  • A painting or decoration on a ceiling. 

vaulting

noun
  • A vaulted structure; such structures treated as a group. 

  • The sport of gymnastics and dance routines performed on horseback, and on the longe line. 

  • The practice of constructing vaults, or a particular method of such construction. 

adj
  • Exaggerated or overreaching. 

  • performing 

  • Leaning upward or over. 

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