adequate vs undistinguished

adequate

adj
  • Equal to or fulfilling some requirement. 

det
  • A sufficient amount of; enough. 

undistinguished

adj
  • Not distinguished: not having an air of distinction. 

  • Not distinguished: not marked by conspicuous qualities. 

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