amiable vs congenial

amiable

adj
  • Friendly; kind; sweet; gracious 

  • Of a pleasant and likeable nature; kind-hearted; easy to like 

congenial

adj
  • Friendly or sociable. 

  • Suitable to one’s needs. 

  • Having the same or very similar nature, personality, tastes, habits or interests. 

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