hallucinatory vs ostensible

hallucinatory

adj
  • Partaking of, or tending to produce, hallucination. 

ostensible

adj
  • Appearing as such; being such in appearance; professed, supposed (rather than demonstrably true or real). 

  • Apparent, evident; meant for open display. 

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