lonely vs unsociable

lonely

adj
  • Without companions; solitary. 

  • Unfrequented by people; desolate. 

  • Unhappy because of feeling isolated from contact with other people. 

unsociable

adj
  • unfriendly 

  • not congenial or compatible 

  • not desiring the company of others 

noun
  • A person who is not sociable. 

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