amma vs mither

amma

noun
  • mother 

  • An abbess or spiritual mother, especially one of the Desert Mothers. 

mither

noun
  • mother 

verb
  • To pester or irritate someone. 

  • To make an unnecessary fuss, moan, bother. 

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