couth vs satisfactory

couth

adj
  • Agreeable, friendly, pleasant. 

  • Marked by or possessing a high degree of sophistication; cultured, refined. 

  • Comfortable; cosy, snug. 

noun
  • Social grace, refinement, sophistication; etiquette, manners. 

  • A person with social graces; a refined or sophisticated person. 

satisfactory

adj
  • Causing satisfaction; agreeable or pleasant; satisfying. 

  • Done to satisfaction; adequate or sufficient. 

  • Making atonement for a sin; expiatory. 

noun
  • The rating given to somebody or something that meets requirements without exceeding them. 

  • Somebody or something that meets requirements without exceeding them. 

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