ayah vs governess

ayah

noun
  • A South Asian female servant, maid or nanny, historically, often one working for Europeans in South Asia. 

  • A verse in the Quran. 

governess

noun
  • A woman paid to educate children in their own home. 

  • A female governor. 

verb
  • To work as governess; to educate children in their own home. 

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