usance vs time period

usance and time period both are nouns.

Word	Noun	Adjective	Verb	Adverb
usance	Yes	No	No	No
time period	Yes	No	No	No

As nouns, time period is a hypernym of usance; that is, time period is a word with a broader meaning than usance:

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

Other hypernyms of usance include period, period of time.

usance (noun)	time period (noun)
accepted or habitual practice	an amount of time
(economics) the utilization of economic goods to satisfy needs or in manufacturing
the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)