custom vs formulary

custom

noun
  • Traditional beliefs or rituals. 

  • Frequent repetition of the same behavior; way of behavior common to many; ordinary manner; habitual practice; method of doing, living or behaving. 

  • Habitual buying of goods; practice of frequenting, as a shop, factory, etc., for making purchases or giving orders; business support. 

  • Long-established practice, considered as unwritten law, and resting for authority on long consent. Compare prescription. 

  • A custom (made-to-order) piece of art, pornography, etc. 

adj
  • Created under particular specifications, specially to fit one's needs: specialized, unique, custom-made. 

  • Own, personal, not standard or premade. 

formulary

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

  • 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. 

  • A collection of formulas in sciences and mathematics. 

adj
  • Stated; prescribed; ritual. 

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