In a financial planning context the word 'budget' (as a noun) strictly speaking means an amount of money that is planned to spend on a particularly activity or resource, usually over a trading year, although budgets apply to shorter and longer periods. An overall organisational plan therefore contains the budgets within it for all the different departments and costs held by them. The verb 'to budget' means to calculate and set a budget, although in a looser context it also means to be careful with money and find reductions (effectively by setting a lower budgeted level of expenditure).