date rape vs delirium

date rape

noun
  • Rape committed after a perpetrator first secretly administers a sedative or memory-inhibiting drug (a date rape drug) to a victim under the cover of a social setting. 

  • Rape committed by an acquaintance of the victim while out on a date. 

delirium

noun
  • Wild, frenzied excitement or ecstasy. 

  • A temporary mental state with a sudden onset, usually reversible, including symptoms of confusion, inability to concentrate, disorientation, anxiety, and sometimes hallucinations. Causes can include dehydration, drug intoxication, and severe infection. 

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