fish out vs unearth

fish out

verb
  • To pick up or pull something or someone from (a body of water). 

  • To search for by rummaging, and then extract (an item from e.g. a container). 

  • To catch all or nearly all the fish in (a given body of water), so that few or none remain. 

unearth

verb
  • To dig up. 

  • To drive or draw from the earth. 

  • To uncover or find; to bring out from concealment 

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