custom vs demand

custom

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

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

  • Traditional beliefs or rituals. 

  • 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. 

demand

noun
  • The desire to purchase goods and services. 

  • An urgent request. 

  • An order. 

  • The amount of a good or service that consumers are willing to buy at a particular price. 

  • A forceful claim for something. 

  • A requirement. 

  • More precisely peak demand or peak load, a measure of the maximum power load of a utility's customer over a short period of time; the power load integrated over a specified time interval. 

verb
  • To require of someone. 

  • To claim a right to something. 

  • To ask forcefully for information. 

  • To request forcefully. 

  • To issue a summons to court. 

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