persuade vs stagnate

persuade

verb
  • To successfully convince (someone) to agree to, accept, or do something, usually through reasoning and verbal influence. 

stagnate

verb
  • To cease to develop, advance, or change; to become idle. 

  • To cease to flow or run. 

  • To be or become foul from standing. 

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