Synonyms and related words :
accommodation, adjustment, changeable, commutable, commutative, convertible, coordination, equal, equalization, equating, equation, equilibration, equivalent, even, evening, evening up, exchanged, give-and-take, integration, interchangeable, interchanged, mutual, permutable, reciprocal, reciprocating, reciprocative, retaliatory, returnable, standard, swapped, switched, traded, transposed