appraise vs fossick

appraise

verb
  • To apprise, inform. 

  • To consider comprehensively. 

  • To determine the value or worth of (something), particularly as a person appointed for this purpose. 

  • To estimate; to conjecture. 

  • To judge the performance of someone, especially a worker. 

  • To praise; to commend. 

fossick

verb
  • To elicit information; to ferret out. 

  • To search for gems, gold, etc., on the surface or in abandoned workings. 

  • To search for something; to rummage. 

  • To be troublesome. 

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