flog vs thresh

flog

verb
  • To whip or scourge as punishment. 

  • To overexploit (land), as by overgrazing, overstocking, etc. 

  • To defeat easily or convincingly. 

  • To sell. 

  • To steal something. 

  • To use something to extreme; to abuse. 

  • To beat away charcoal dust etc. using a flogger. 

noun
  • A contemptible, often arrogant person; a wanker. 

  • A weblog designed to look authentic, but actually developed as part of a commercial marketing strategy to promote some product or service. 

thresh

verb
  • To violently toss the limbs about. 

  • To beat soundly, usually with some tool such as a stick or whip; to drub. 

  • To separate the grain from the straw or husks (chaff) by mechanical beating, with a flail or machinery. 

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