rate

(noun): The worth of something; value.
(noun): The proportional relationship between one amount, value etc. and another.
(noun): Speed.
(noun): The relative speed of change or progress.
(noun): The price of (an individual) thing; cost.
(noun): A set price or charge for all examples of a given case, commodity, service etc.
(noun): A wage calculated in relation to a unit of time.
(noun): Any of various taxes, especially those levied by a local authority.
(noun): A class into which ships were assigned based on condition, size etc.; by extension, rank.
(noun): Established portion or measure; fixed allowance; ration.
(noun): Order; arrangement.
(noun): Ratification; approval.
(noun): The gain or loss of a timepiece in a unit of time.
(verb): To assign or be assigned a particular rank or level.
(verb): To evaluate or estimate the value of.
(verb): To consider or regard.
(verb): To deserve; to be worth.
(verb): To determine the limits of safe functioning for a machine or electrical device.
(verb): To evaluate a property's value for the purposes of local taxation.
(verb): To like; to think highly of.
(verb): To have position (in a certain class).
(verb): To have value or standing.
(verb): To ratify.
(verb): To ascertain the exact rate of the gain or loss of (a chronometer) as compared with true time.

At the height of his powers, he was producing pictures at the rate of four a year.
The car was speeding down here at a hell of a rate.
The rate of production at the factory is skyrocketing.
He asked quite a rate to take me to the airport.
Postal rates here are low.