exchange premium vs agiotage

exchange premium and agiotage both are nouns.

Word	Noun	Adjective	Verb	Adverb
exchange premium	Yes	No	No	No
agiotage	Yes	No	No	No

As nouns, exchange premium and agiotage are synonyms defined as:

Other synonyms of exchange premium include agio, premium.

exchange premium (noun)	agiotage (noun)
a fee charged for exchanging currencies	a fee charged for exchanging currencies
	speculative dealing in stock exchange securities or foreign exchange.