inhabitant vs oppidan

inhabitant

adj
  • resident 

noun
  • Someone or thing who lives in a place. 

oppidan

adj
  • Of or pertaining to a town or conurbation. 

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

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