affable vs companionable

affable

adj
  • Receiving others kindly and conversing with them in a free and friendly manner; friendly, courteous, sociable. 

  • Mild; benign. 

companionable

adj
  • Having the characteristics of a worthy companion; friendly and sociable. 

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