easy to understand vs plebeian

easy to understand

plebeian

adj
  • Of or concerning the plebs, the common citizens of ancient Rome. 

  • Of or concerning the common people. 

  • Common, particularly (derogatory) vulgar, crude, coarse, uncultured. 

noun
  • A commoner, particularly (derogatory) a low, vulgar person. 

  • A member of the plebs, the common citizens of ancient Rome. 

How often have the words easy to understand and plebeian occurred in a corpus of books? (source: Google Ngram Viewer )