Lutheran vs Protestant

Lutheran

noun
  • A member of any of the Christian churches which identify with the theology of Martin Luther. 

adj
  • Of or pertaining to the theology of Martin Luther (1483–1546) or his followers, or the Lutheran church. 

Protestant

noun
  • A member of any of several Christian denominations which separated from the Roman Catholic Church based on theological or political differences during the Reformation (or in some cases later). 

  • A member of the Church of England or Church of Ireland, as distinct from Protestant nonconformists or dissenters 

adj
  • Of or pertaining to several denominations of Christianity that separated from the Roman Catholic Church based on theological or political differences during the Reformation. 

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