onus vs tort

onus

noun
  • A legal obligation. 

  • Burden of proof, onus probandi. 

  • Stigma. 

  • Blame. 

  • Responsibility; burden. 

tort

noun
  • A wrongful act, whether intentional or negligent, regarded as non-criminal and unrelated to a contract, which causes an injury and can be remedied in civil court, usually through the awarding of damages. 

adj
  • Synonym of tart (“sharp- or sour-tasting; (figuratively) keen, severe, sharp”) 

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