loneliness vs secludedness

loneliness

noun
  • The condition or state of being alone or having no companions. 

  • The state of being unfrequented or devoid of human activity (of a place or time). 

  • A feeling of depression resulting from being alone or from having no companions. 

secludedness

noun
  • The quality or state of being secluded. 

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