sucker punch vs thrash

sucker punch

noun
  • An unexpected punch or similar blow. 

  • A disabling punch targeting a place which is not normally acceptable in a "fair fight", such as on the back of the head. 

verb
  • To deliver an unexpected blow. 

thrash

noun
  • A beat or blow; the sound of beating. 

  • thrash metal 

verb
  • To defeat utterly. 

  • To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result. 

  • In computer architecture, to cause or undergo poor performance of a virtual memory (or paging) system. 

  • To move about wildly or violently; to flail; to labour. 

  • To beat mercilessly. 

  • To thresh. 

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