assist vs thrash

assist

verb
  • To help. 

  • To make a pass that leads directly towards scoring. 

  • To help compensate for what is missing with the help of a medical technique or therapy. 

noun
  • A decisive pass made to the goal scorer 

  • A helpful action or an act of giving. 

  • A defensive play, allowing a teammate to record a putout. 

thrash

verb
  • To thresh. 

  • 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. 

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

  • thrash metal 

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