institutional vs spartan

institutional

adj
  • Of, pertaining to, characteristic of, or organized along the lines of an institution. 

  • Arising from the practice of an institution. 

  • Elementary; rudimentary. 

  • Instituted by authority. 

spartan

adj
  • Resolute in the face of danger or adversity. 

  • Lacking in decoration and luxury. 

  • Austere, frugal, characterized by self-denial. 

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