commons vs sustenance

commons

noun
  • Food in general; rations. 

  • A dining hall, usually at a college or university. 

  • The free burghers/bourgeoisie of a given town, taken collectively. 

  • The common people collectively, the third estate, the people not belonging to the nobility or clergy 

  • A central section of (usually an older) town, designated as a shared area, a common. 

  • The mutual good of all; the abstract concept of resources shared by more than one, for example air, water, information. 

sustenance

noun
  • Something that provides support or nourishment. 

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