afraid vs nerveless

afraid

adj
  • Impressed with fear or apprehension; in fear. 

  • Regretful, sorry; expressing a reluctance to face an unpleasant situation. 

  • Worried about, feeling concern for, fearing for (someone or something). 

nerveless

adj
  • Lacking nerve: fearful; cowardly. 

  • Devoid of nerves: calm, controlled, cool under pressure. 

  • Lacking a nervous system. 

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