Expenditure is an outflow of money, or any form of fortune in general, to another person or group as payment for an item, service, or other category of costs.
For a tenant, rent is an expense. For students or parents, tuition is an expense.
Buying food, clothing, furniture or an automobile is often referred to as an expense.
An expense is a cost that is “paid” or “remitted”, usually in exchange for something of value.
Something that seems to cost a great deal is “expensive”. Something that seems to cost little is “inexpensive”.
“Expenses of the table” are expenses of dining, refreshments, a feast, etc.