blemish vs frailty

blemish

noun
  • A moral defect; a character flaw. 

  • A small flaw which spoils the appearance of something, a stain, a spot. 

verb
  • To tarnish (reputation, character, etc.); to defame. 

  • To spoil the appearance of. 

frailty

noun
  • A fault proceeding from weakness; foible; sin of infirmity. 

  • The condition quality of being frail, physically, mentally, or morally; weakness of resolution; liability to be deceived. 

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