apostolic vs secular

apostolic

adj
  • Of or pertaining to the pope or the papacy; papal. 

  • Of or pertaining to the Catholic missions. 

  • Pertaining to apostles or their practice of teaching; pertaining to the apostles (of early Christianity) or their teachings. 

  • According to the doctrines of the apostles; delivered or taught by the apostles. 

secular

adj
  • Not bound by the vows of a monastic order. 

  • Centuries-old, ancient. 

  • Unperturbed over time. 

  • Relating to long-term non-periodic irregularities, especially in planetary motion or magnetic field. 

  • Not specifically religious; lay or civil, as opposed to clerical. 

  • Temporal; worldly, or otherwise not based on something timeless. 

  • Continuing over a long period of time, long-term. 

  • Happening once in an age or century. 

noun
  • A layman, as distinguished from a clergyman. 

  • A secular ecclesiastic, or one not bound by monastic rules. 

  • A church official whose functions are confined to the vocal department of the choir. 

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