thud vs thunk

thud

verb
  • To make the sound of a dull impact. 

noun
  • The sound of a dull impact. 

  • A slower, dull impact with a wide surface area. 

  • A hard, dull impact. 

thunk

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

  • To delay (a computation). 

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

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. 

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. 

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