exchangeable vs fungible

exchangeable is not a noun while fungible is a noun.

Word	Noun	Adjective	Verb	Adverb
exchangeable	No	Yes	No	No
fungible	Yes	Yes	No	No

exchangeable (noun)	fungible (noun)
	a commodity that is freely interchangeable with another in satisfying an obligation

exchangeable (adjective)	fungible (adjective)
suitable to be exchanged	of goods or commodities; freely exchangeable for or replaceable by another of like nature or kind in the satisfaction of an obligation
capable of being exchanged for or replaced by something of equal value
capable of replacing or changing places with something else; permitting mutual substitution without loss of function or suitability