depress vs work up

depress

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

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

  • To make depressed, sad or bored. 

  • To press down. 

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

work up

verb
  • To raise; to excite; to stir up. 

  • To give (a patient) a general medical examination to assess health and fitness. 

  • To develop. 

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