Underwriter vs Underwrites - What's the difference?

As a noun underwriter

is an entity assuming a financial risk.

third-person singular of underwrite.

(en noun)

An entity assuming a financial risk.

A person working for an insurance company who arranges and authorizes an insurance policy with a broker or insured.

(finance) An entity undertaking to market newly issued securities.

They were the underwriters of the company's shares, but only on a "best efforts" basis.

(head)

(underwrite)

To write below or under; subscribe.

(transitive, intransitive, obsolete) To subscribe (a document, policy etc.) with one's name.

To sign; to put one's name to.

To agree to pay by signing one's name; subscribe.

Specifically, to assume financial responsibility for something, and guarantee it against failure.

To act as an underwriter.

* Marshall

The broker who procures the insurance ought not, by underwriting the policy, to deprive the parties of his unbiased testimony.

To support, lend support to, guarantee the basis of.

To submit to; put up with.

* underwriter * underwriting