Americanism vs usance

Americanism and usance both are nouns.

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

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

Other hypernyms of Americanism include custom, usage.

Americanism (noun)	usance (noun)
a custom that is peculiar to the United States or its citizens	accepted or habitual practice
loyalty to the United States and its institutions	(economics) the utilization of economic goods to satisfy needs or in manufacturing
an expression that is characteristic of English as spoken by Americans	the period of time permitted by commercial usage for the payment of a bill of exchange (especially a foreign bill of exchange)