usage

 
Pronunciation: /ˈjuːsɪdʒ/

noun

[mass noun]
  • the action of using something or the fact of being used: a survey of water usage the usage of equipment
  • the way in which a word or phrase is normally and correctly used: [count noun]: there are various derivative usages
  • habitual or customary practice, especially as creating a right, obligation, or standard: [count noun]: the dictates and usages of polite society

Origin:

Middle English (in the sense 'customary practice'): from Old French, from us 'a use' (see use)

Spelling rule

Usage is formed from use (minus the silent e) plus the ending -age.