heap on vs lay on

heap on

verb
  • To give someone a lot of something (advice, praise, insults, etc.), especially more so than they can handle or is appropriate 

lay on

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

  • To provide 

  • To repeatedly say (particular types of thing) 

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

  • to provide (food or drinks) for free 

  • To apply or implement (something). 

  • To do something excessively. 

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

  • To impart or explain (something) in words. 

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

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