guerdon vs heap on

guerdon

verb
  • To give such a reward to. 

noun
  • A reward, prize or recompense for a service; an accolade. 

heap on

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

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