ay vs ze

ay

noun
  • The name of the Latin-script letter A. 

intj
  • All right (inter); hooray (inter); cool (inter). 

  • New Zealand spelling of eh (question tag) 

  • Ah! alas! 

ze

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

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

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