custom (n)
usage (n)
usance (n)

Definition: accepted or habitual practice

usance (n)

Definition: the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)

consumption (n)
economic consumption (n)
usance (n)
use (n)
use of goods and services (n)

Definition: (economics) the utilization of economic goods to satisfy needs or in manufacturing
Example: the consumption of energy has increased steadily.