cheapening vs crass

cheapening

noun
  • The process by which something is cheapened or made vulgar. 

crass

adj
  • materialistic 

  • dense 

  • Lacking finesse; crude and obvious. 

  • coarse; crude; unrefined or insensitive; lacking discrimination 

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