debase vs depress

debase

verb
  • To lower the value of (a currency) by reducing the amount of valuable metal in the coins. 

  • To lower in character, quality, or value; to degrade. 

depress

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

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

  • To make depressed, sad or bored. 

  • To press down. 

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

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