dissuasion vs hard sell

dissuasion

noun
  • the act or an instance of dissuading 

hard sell

noun
  • A sales technique of pressuring the potential buyer to agree to a purchase. 

  • A sales transaction which is challenging for the sales person to make; any act or object of persuasion which is challenging. 

How often have the words dissuasion and hard sell occurred in a corpus of books? (source: Google Ngram Viewer )