concern vs pathos

concern

noun
  • The expression of solicitude, anxiety, or compassion toward a thing or person. 

  • The placement of interest or worry on a subject. 

  • That which affects one’s welfare or happiness. A matter of interest to someone. 

  • A worry; a sense that something may be wrong; an identification of a possible problem. 

  • A business, firm or enterprise; a company. 

  • Any set of information that affects the code of a computer program. 

verb
  • To engage by feeling or sentiment; to interest. 

  • To relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to. 

  • To make somebody worried. 

pathos

noun
  • A writer or speaker's attempt to persuade an audience through appeals involving the use of strong emotions such as pity. 

  • An author's attempt to evoke a feeling of pity or sympathetic sorrow for a character. 

  • In theology and existentialist ethics following Kierkegaard and Heidegger, a deep and abiding commitment of the heart, as in the notion of "finding your passion" as an important aspect of a fully lived, engaged life. 

  • Suffering; the enduring of active stress or affliction. 

  • The quality or property of anything which touches the feelings or excites emotions and passions, especially that which awakens tender emotions, such as pity, sorrow, and the like; contagious warmth of feeling, action, or expression; pathetic quality. 

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