formulary vs pro forma

formulary

adj
  • Stated; prescribed; ritual. 

noun
  • A list of formulas; a collection of set forms to be followed, especially in religious belief. 

  • A pharmacopoeia or list of available drugs, particularly prescription drugs 

  • A list of drugs, created by health insurers, hospitals, or prescription drug plans, that defines how costs for any drug are shared between patient and health care provider, typically broken down by tiers such as preferred generics with lowest copay, or preferred brand with higher copay, or non-preferred brand and not covered tiers with the highest cost to the patient. 

  • An ancient or medieval collection of models for official writings. 

  • A collection of formulas in sciences and mathematics. 

pro forma

adj
  • Occurring, undertaken, or performed as a perfunctory matter, in the interest of form, or for the sake of formality. 

  • Of or relating to a document of form, especially an invoice sent in advance. 

  • Showing projected costs, liabilities, etc., especially as a result of an expected action or situation. 

noun
  • A document that shows the standard entries of a form or similar document. 

adv
  • Undertaken or performed as a perfunctory matter, in the interest of form, or for the sake of politeness. 

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