is a specific kind of: quality.

is a broader term that covers: commutability, transmutability | fluidity, fluidness | reversibility | shiftiness | changefulness, inconstancy | variability, variableness, variance | exchangeability, fungibility, interchangeability, interchangeableness | progressiveness, progressivity | mutability, mutableness.

is an attribute of: changeable, changeful | unchangeable.

is the opposite of: changelessness, unchangeability, unchangeableness, unchangingness.

derivation: changeable, mutable | changeable, chatoyant, iridescent, shot | changeable, uncertain, unsettled.