Insure
Part of speech: verb
Definition: To provide for compensation if some specified risk occurs. Often agreed by policy (contract) to offer financial compensation in case of an accident, theft or other undesirable event. To deal in such contracts; subscribe to a policy of insurance To make sure or certain of; guarantee. To give confidence in the trustworthiness of.
Underwrite
Part of speech: verb
Definition: To write (something) below something else.To subscribe (a document, policy etc.) with one's name.To sign; to put one's name to.Specifically, to assume financial responsibility for something, and guarantee it against failure.To act as an underwriter.To support, lend support to, guarantee the basis of.