heap on vs impart

heap on

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

impart

verb
  • To give or bestow (e.g. a quality or property). 

  • To make known; to show (by speech, writing etc.). 

  • To obtain a share of; to partake of. 

  • To give a part or to share. 

  • To hold a conference or consultation. 

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