encourage vs stamp out

encourage

verb
  • To spur on, strongly recommend. 

  • To mentally support; to motivate, give courage, hope or spirit. 

  • To foster, give help or patronage 

stamp out

verb
  • To get rid of totally; to eradicate. 

  • To extinguish by stamping. 

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