cliquish vs rarefied

cliquish

adj
  • Tending to associate with a small and exclusive group. 

  • Of or pertaining to a clique. 

rarefied

adj
  • Distant from the lives and everyday concerns of ordinary people; esoteric, exclusive, select. 

  • Elevated in style or nature, sublime; of high intellectual or moral value. 

  • Less dense than usual; thin. 

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