is a specific kind of: changeability, changeableness.

is a broader term that covers: duality | transferability | convertibility | inconvertibility | commutability, replaceability, substitutability | liquidity | permutability, permutableness, transposability.

is the opposite of: unexchangeability.

derivation: convertible, exchangeable | fungible | exchangeable, interchangeable, similar, standardised, standardized | interchangeable.