Surplus

Part of speech: noun (n.)

1. That which remains when use or need is satisfied, or when a limit is reached; excess; overplus.

2. Specifically, an amount in the public treasury at any time greater than is required for the ordinary purposes of the government.

Part of speech: adjective (a.)

Being or constituting a surplus; more than sufficient; as, surplus revenues; surplus population; surplus words. When the price of corn falleth, men give over surplus tillage, and break no more ground. Carew.