dispiriting vs institutional

dispiriting

adj
  • Lowering the morale of; making despondent or depressive; disheartening. 

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. 

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