enjoin vs require

enjoin

verb
  • To lay upon, as an order or command; to give an injunction to; to direct with authority; to order; to charge. 

  • To prescribe under authority; to ordain 

  • To prohibit or restrain by a judicial order or decree; to put an injunction on. 

require

verb
  • To demand, to insist upon (having); to call for authoritatively. 

  • To demand of (someone) to do something. 

  • Naturally to demand (something) as indispensable; to need, to call for as necessary. 

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