blot vs flaw

blot

verb
  • To impair; to damage; to mar; to soil. 

  • to cause a blot (on something) by spilling a coloured substance. 

  • To obliterate, as writing with ink; to cancel; to efface; generally with out. 

  • To dry (writing, etc.) with blotting paper. 

  • To spot, stain, or bespatter, as with ink. 

  • To obscure; to eclipse; to shadow. 

  • to soak up or absorb liquid. 

  • To stain with infamy; to disgrace. 

noun
  • A stain on someone's reputation or character; a disgrace. 

  • An exposed piece in backgammon. 

  • A blemish, spot or stain made by a coloured substance. 

  • A method of transferring proteins, DNA or RNA, onto a carrier. 

flaw

verb
  • To become imperfect or defective; to crack or break. 

  • To add a flaw to, to make imperfect or defective. 

noun
  • A storm of short duration. 

  • An inclusion, stain, or other defect of a diamond or other gemstone. 

  • A sudden burst of noise and disorder 

  • A crack or breach, a gap or fissure; a defect of continuity or cohesion. 

  • A defect or error in a contract or other document which may make the document invalid or ineffective. 

  • A defect, fault, or imperfection, especially one that is hidden. 

  • A sudden burst or gust of wind of short duration; windflaw. 

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