hammer home vs suggest

hammer home

verb
  • To repeatedly or continually emphasise (an opinion or idea) until or so that a person or group of people understands it. 

suggest

verb
  • To cause one to suppose (something); to bring to one's mind the idea (of something). 

  • To explicitly mention (something) as a possibility for consideration, often to recommend it 

  • To imply but stop short of explicitly stating (something). 

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