ceil vs encrust

ceil

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

  • To set a higher bound. 

noun
  • A ceiling. 

encrust

verb
  • To inset or affix decorative materials upon (a surface); to inlay into, as a piece of carving or other ornamental object. 

  • To cover with a hard crust. 

  • To form a crust. 

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