abash vs dastardize

abash

verb
  • To make ashamed; to embarrass; to destroy the self-possession of, as by exciting suddenly a consciousness of guilt, mistake, or inferiority; to disconcert; to discomfit. 

dastardize

verb
  • To make cowardly; to intimidate or dispirit. 

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