cathedral vs oratory

cathedral

noun
  • A large or important church building. 

  • A large, impressive, lofty, and/or important building or place of some other kind. 

  • The principal church of an archbishop's/bishop's archdiocese/diocese which contains an episcopal throne. 

  • A large buttressed structure built by certain termites. 

name
  • In certain right-wing conspiracy theories, the mainstream system or establishment of society, held to be liberal or leftist and to be working against the interests of the people or nation, which is both. 

adj
  • Relating to the throne or the see of a bishop. 

oratory

noun
  • A Catholic church belonging to the Oratory of Saint Philip Neri. 

  • Eloquence; the quality of artistry and persuasiveness in speech or writing. 

  • A Roman Catholic chapel; a building for public or private worship that is not a parish church. 

  • A private chapel or prayer room. 

  • The art of public speaking, especially in a formal, expressive, or forceful manner. 

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