old sod vs tillage

old sod

noun
  • The old country; one's place of origin. 

  • Used other than figuratively or idiomatically: see old, sod (person). 

tillage

noun
  • Land cultivated in this way. 

  • The cultivation of arable land by plowing, sowing and raising crops. 

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