ready vs unavailable

ready

verb
  • To prepare; to make ready for action. 

noun
  • ready money; cash 

adj
  • Not slow or hesitating; quick in action or perception of any kind. 

  • Prepared for immediate action or use. 

  • Offering itself at once; at hand; opportune; convenient. 

  • Inclined; apt to happen. 

  • Liable at any moment. 

unavailable

noun
  • A communist who operated underground and was therefore not available for a political leadership position. 

adj
  • Not available. 

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