firman vs precept

firman

noun
  • A royal decree issued by a sovereign in certain historical Islamic states, especially by the Sultan of Turkey. 

precept

noun
  • An order issued by one local authority to another specifying the rate of tax to be charged on its behalf. 

  • A rule or principle, especially one governing personal conduct. 

  • A written command, especially a demand for payment. 

  • A rate or tax set by a precept. 

verb
  • To act as a preceptor; to teach a physician-in-training by supervising their clinical practice. 

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