blame vs knock

blame

verb
  • To censure (someone or something); to criticize. 

  • To assert the cause of some bad event. 

  • To assert or consider that someone is the cause of something negative; to place blame, to attribute responsibility (for something negative or for doing something negative). 

noun
  • Culpability for something negative or undesirable. 

  • A source control feature that can show which user was responsible for a particular portion of the source code. 

  • Censure. 

  • Responsibility for something meriting censure. 

knock

verb
  • To criticize verbally; to denigrate; to undervalue. 

  • To kick a ball towards another player; to pass. 

  • To rap one's knuckles against something, especially wood. 

noun
  • An abrupt rapping sound, as from an impact of a hard object against wood. 

  • A sharp impact. 

  • A batsman's innings. 

  • A blow or setback. 

  • Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it. 

  • Synonym of hunger knock 

  • A criticism. 

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