dastard vs fink

dastard

noun
  • A malicious coward; a dishonorable sneak. 

verb
  • To dastardize. 

adj
  • Meanly shrinking from danger, cowardly, dastardly. 

fink

noun
  • A contemptible person. 

  • An informer. 

  • A strikebreaker. 

  • Any of several birds in the family Ploceidae native to southern Africa. 

verb
  • To betray a trust; to inform on. 

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