concern vs fear

concern

verb
  • To make somebody worried. 

  • 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. 

noun
  • The placement of interest or worry on a subject. 

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

  • 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. 

fear

verb
  • To worry about, to feel concern for, to be afraid for. 

  • To regret. 

  • To be afraid of (something or someone); to consider or expect (something or someone) with alarm. 

  • To venerate; to feel awe towards. 

  • To feel fear. 

adj
  • Able; capable; stout; strong; sound. 

noun
  • Terrified veneration or reverence, particularly towards God, gods, or sovereigns. 

  • A strong, uncontrollable, unpleasant emotion or feeling caused by actual or perceived danger or threat. 

  • A phobia, a sense of fear induced by something or someone. 

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