acquaintanceship vs solitude

acquaintanceship

noun
  • A relationship as acquaintances. 

  • The state of being acquainted. 

solitude

noun
  • A lonely or deserted place. 

  • Aloneness; the state of being alone, solitary, or by oneself. 

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