the act, system, or business of insuring property, life, one's person, against loss or harm arising in specified contingencies, as fire, accident, death, disablement, or the like, in consideration of a payment proportionate to the risk involved.
Coverage by contract in which one party agrees to indemnify or reimburse another for loss that occurs under the terms of the contract.
Any means of guaranteeing against loss or harm
So insurance is very use full term in any form.