legislate vs prescribe

legislate

verb
  • To pass laws (including the amending or repeal of existing laws). 

prescribe

verb
  • To develop or assert a right; to make a claim (by prescription). 

  • To order (a drug or medical device) for use by a particular patient (under licensed authority). 

  • To specify by writing as a required procedure or ritual; to lay down authoritatively as a guide, direction, or rule of action. 

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