thump vs whack

thump

verb
  • To hit (someone or something) as if to make a thump. 

  • To throb with a muffled rhythmic sound. 

  • To cause to make a thumping sound. 

  • To thud or pound. 

noun
  • A blow that produces a muffled sound. 

  • The sound of such a blow; a thud. 

whack

verb
  • To hit, slap or strike. 

  • To kill, bump off. 

  • To surpass; to better. 

  • To beat convincingly; to thrash. 

  • To share or parcel out (often with up). 

noun
  • An attempt, a chance, a turn, a go, originally an attempt to beat someone or something. 

  • The sound of a heavy strike. 

  • The strike itself. 

  • The backslash, ⟨ \ ⟩. 

  • The stroke itself, regardless of its successful impact. 

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