usage vs usance

usage and usance both are nouns.

Word	Noun	Adjective	Verb	Adverb
usage	Yes	No	No	No
usance	Yes	No	No	No

As nouns, usage and usance are synonyms defined as:

Other synonyms of usage include custom.

usage (noun)	usance (noun)
the act of using	accepted or habitual practice
accepted or habitual practice	(economics) the utilization of economic goods to satisfy needs or in manufacturing
the customary manner in which a language (or a form of a language) is spoken or written	the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)