blues vs depression

blues

noun
  • A feeling of sadness or depression. 

  • Any of various blue pills sold on the street, mimicking the appearance of prescription pain killer tablets but often laced with fentanyl that leads to overdose deaths (see opioid epidemic). 

  • One's particular life experience, particularly including the hardships one has faced. 

  • New South Wales. 

  • Manchester City FC. 

  • A musical form, African-American in origin, generally featuring an eight-bar or twelve-bar blues structure and using the blues scale. 

  • Carlton Football Club. 

  • A musical composition following blues forms. 

  • Everton FC. 

  • The negative emotional state produced by a particular action, occupation, experience or idea. 

  • A uniform made principally of a blue fabric, and especially a full dress uniform thus colored. 

  • Chelsea FC. 

  • Birmingham City FC. 

depression

noun
  • A period of low morale or unhappiness (a period of experiencing the above-mentioned state of mind) which lasts longer than several weeks and may include ideation of self-inflicted injury or suicide. 

  • Four consecutive quarters of negative, real GDP growth. See NBER. 

  • A state of mind producing serious, long-term lowering of enjoyment of life or inability to visualize a happy future. 

  • A lowering, in particular a reduction in a particular biological variable or the function of an organ, in contrast to elevation. 

  • A period of major economic contraction. 

  • The act of lowering or pressing something down. 

  • An area that is lower in topography than its surroundings. 

  • An area of lowered air pressure that generally brings moist weather, sometimes promoting hurricanes and tornadoes. 

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