ba vs ma

ba

noun
  • Father, baba. 

  • A being's soul or personality, represented as a bird-headed figure, which survives after death but must be sustained with offerings of food. 

  • A medieval football game played in parts of Scotland around Christmas and New Year. 

ma

noun
  • mother, mama 

  • May 

  • The landlady of a theater. 

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