knock vs thunk

knock

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

  • To criticize verbally; to denigrate; to undervalue. 

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

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. 

thunk

verb
  • To strike against something, without breakage, making a "thunk" sound. 

  • To delay (a computation). 

  • To execute (code) by means of a thunk. 

intj
  • Representing the dull sound of the impact of a heavy object striking another and coming to an immediate standstill, with neither object being broken by the impact. 

noun
  • A specialized subroutine that one software module uses to execute code in another module. 

  • In the Scheme programming language, a function or procedure taking no arguments. 

  • A delayed computation. 

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