digging vs quest

digging

noun
  • The action performed by a person or thing that digs. 

  • A place where ore is dug, especially certain localities in California, Australia, etc. where gold is obtained. 

quest

noun
  • The act of seeking, or looking after anything; attempt to find or obtain; search; pursuit. 

  • A short test. 

  • A journey or effort in pursuit of a goal (often lengthy, ambitious, or fervent); a mission. 

verb
  • To locate and attach to a host animal. 

  • To seek or pursue a goal; to undertake a mission or job. 

  • To search for something; to seek. 

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