bar sinister vs onus

bar sinister

noun

  • A state or characteristic which is dishonorable or shameful; a stigma. 

  • A bend sinister or baton sinister in a coat of arms. 

  • The state or characteristic of having been born out of wedlock; illegitimacy; bastardy. 

onus

noun

  • Stigma. 

  • A legal obligation. 

  • Burden of proof, onus probandi. 

  • Blame. 

  • Responsibility; burden. 

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