frustrated vs lovesick

frustrated

adj
  • Suffering from frustration; dissatisfied, agitated, and/or discontent because one is unable to perform an action or fulfill a desire. 

  • (of a felony or serious criminal offense) Imperfect form of execution of a crime in that, despite performing all the acts that should produce it, the crime fails to be consummated. 

  • Foiled, stopped, disappointed. 

lovesick

adj
  • Behaving oddly, or as though in distress, due to being overcome by feelings of love. 

  • Having an aching desire for one's beloved. 

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