use vs usance

use and usance both are nouns.

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

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

use: (psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition
usance: accepted or habitual practice

Other hypernyms of use include custom, usage.

As nouns, use and usance are synonyms defined as:

use and usance: (economics) the utilization of economic goods to satisfy needs or in manufacturing

Other synonyms of use include consumption, economic consumption, use of goods and services.

use (noun)	usance (noun)
the act of using	accepted or habitual practice
(psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition	(economics) the utilization of economic goods to satisfy needs or in manufacturing
exerting shrewd or devious influence especially for one's own advantage	the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)
what something is used for
a particular service
(law) the exercise of the legal right to enjoy the benefits of owning property
(economics) the utilization of economic goods to satisfy needs or in manufacturing

use (verb)	usance (verb)
put into service; make work or employ for a particular purpose or for its inherent or natural purpose
take or consume (regularly or habitually)
use up (resources or materials)
habitually do something or be in a certain state or place (use only in the past tense)
avail oneself to
seek or achieve an end by using to one's advantage