depress vs encourage

depress

verb
  • To make depressed, sad or bored. 

  • To cause a depression or a decrease in parts of the economy. 

  • To press down. 

  • To bring down or humble; to abase (pride, etc.). 

  • To reduce (an equation) in a lower degree. 

encourage

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

  • To spur on, strongly recommend. 

  • To foster, give help or patronage 

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