lay on vs pencil in

lay on

verb
  • To cover something with a layer of (something). 

  • To provide 

  • To repeatedly say (particular types of thing) 

  • To sail towards or to arrive at (a destination). 

  • To give (something) as a gift, special treat or bonus. 

  • to provide (food or drinks) for free 

  • To apply or implement (something). 

  • To do something excessively. 

  • To impart or explain (something) in words. 

  • To vigorously row (an oar) to propel a boat or ship. 

pencil in

verb
  • to fill in or write in using pencil 

  • to provisionally schedule 

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