depress vs rehabilitate

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. 

rehabilitate

verb
  • To vindicate; to restore the reputation or image of (a person, concept etc.). 

  • To restore or repair (a vehicle, building); to make habitable or usable again. 

  • To restore (someone) to their former state, reputation, possessions, status etc. 

  • To return (something) to its original condition. 

  • To restore to (a criminal etc.) the necessary training and education to allow for a successful reintegration into society; to retrain. 

  • To return (someone) to good health after illness, addiction, etc. 

  • To go through such a process; to recover. 

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