emotion vs passion

emotion

noun
  • A person's internal state of being and involuntary physiological response to an object or a situation, based on or tied to physical state and sensory data. 

  • A reaction by a non-human organism with behavioral and physiological elements similar to a person's response. 

passion

noun
  • An object of passionate or romantic love or strong romantic interest. 

  • Fervor, determination. 

  • A display, musical composition, or play meant to commemorate the suffering of Jesus. 

  • The suffering of Jesus leading up to and during his crucifixion. 

  • Any great, strong, powerful emotion, especially romantic love or extreme hate. 

  • A true desire sustained or prolonged. 

  • Sexual intercourse, especially when very emotional. 

verb
  • To give a passionate character to. 

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