householder vs oppidan

householder

noun
  • (Hinduism) A layperson, lay devotee, gahapati, grihastha. 

  • The head of a household. 

  • The owner of a house. 

oppidan

noun
  • A class of student in traditional English public schools such as Eton; opposed to colleger or King's Scholar. 

adj
  • Of or pertaining to a town or conurbation. 

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