prescription vs standard variety

prescription

noun
  • The act of establishing or formalizing ideal norms for language use, as opposed to describing the actual norms of such use; an instance of this. 

  • A written order from an authorized medical practitioner for provision of a medicine or other treatment, such as (ophthalmology) the specific lenses needed for a pair of glasses. 

  • An established time period after which a person who has uninterruptedly, peacefully, and publicly used another's property acquires full ownership of it. 

  • Synonym of enactment, the act of establishing a law, regulation, etc., particularly in writing; an instance of this. 

  • An established time period within which a right must be exercised and after which it is null and permanently unenforceable. 

  • Any plan of treatment or planned treatment. 

  • The medicine or treatment provided by such an order. 

adj
  • only available with a physician or nurse practitioner's written prescription 

standard variety

noun
  • Synonym of standard language 

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