Kafkaesque vs illusory

Kafkaesque

adj
  • Marked by a senseless, disorienting, often menacing complexity. 

  • Marked by surreal distortion and often a sense of looming danger. 

  • In the manner of something written by Franz Kafka. 

illusory

adj
  • Resulting from an illusion; deceptive, imaginary, unreal. 

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