dread vs trepidation

dread

noun
  • Great fear in view of impending evil; fearful apprehension of danger; anticipatory terror. 

  • A Rastafarian. 

  • Somebody or something dreaded. 

  • Reverential or respectful fear; awe. 

adj
  • Terrible; greatly feared; dreaded. 

verb
  • To be in dread, or great fear. 

  • To style (the hair) into dreadlocks. 

  • To fear greatly. 

  • To anticipate with fear. 

trepidation

noun
  • A fearful state; a state of concern or hesitation. 

  • An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear. 

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