fraught vs nail-biting

fraught

adj
  • Distressed or causing distress, for example through complexity. 

  • Furnished, equipped. 

  • Loaded up or charged with; accompanied by; entailing. 

  • Laden. 

noun
  • Two bucketfuls (of water). 

  • A load; a burden. 

verb
  • To load (a ship, cargo etc.). 

nail-biting

adj
  • That causes nervous anticipation or suspense 

How often have the words fraught and nail-biting occurred in a corpus of books? (source: Google Ngram Viewer )