opium vs ze

opium

noun
  • A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of the opium poppy, Papaver somniferum, and containing alkaloids such as morphine, codeine, and papaverine. 

  • Anything that numbs or stupefies. 

ze

pron
  • a gender-neutral third-person singular subject pronoun, equivalent to singular they, and coordinate with gendered pronouns he and she. 

noun
  • The name of the Cyrillic script letter З / з. 

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