speculate vs thresh out

speculate

verb
  • To make a risky trade in the hope of making a profit; to venture or gamble. 

  • To make an inference based on inconclusive evidence; to surmise or conjecture. 

  • To anticipate which branch of code will be chosen and execute it in advance. 

thresh out

verb
  • To extract or remove by threshing. 

  • To thrash out. 

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