Missus vs Nanna

Missus

name
  • Mrs, a form of address for a married woman. 

Nanna

name
  • A goddess, the wife of Balder. 

  • A surname from Italian. 

  • The god of the moon in Sumerian mythology. 

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