| verb | be careful or certain to do something; make certain of something “He verified that the valves were closed” |
| verb | make certain of “This nest egg will ensure a nice retirement for us” |
| verb | protect by insurance “The insurance won't cover this” |
| verb | take out insurance for |
| check | noun | additional proof that something that was believed (some fact or hypothesis or theory) is correct |
| guarantee | noun | an unconditional commitment that something will happen or that something is true |
| coverage | noun | the total amount and type of insurance carried |
| insurer | noun | a financial institution that sells insurance |
| insurance | noun | promise of reimbursement in the case of loss; paid to people or companies so concerned about hazards that they have made prepayments to an insurance company |
| underwriter | noun | an agent who sells insurance |