Similar word to inter-changeability:
adequation, agreement, alikeness, compatibility, conformity, correlation, correspondence, equality, evenness, exchangeability, identity, interchangeability, interchangeableness, likeness, match, par, parallel, parity, synonym, synonymy
adequation, agreement, alikeness, compatibility, conformity, correlation, correspondence, equality, evenness, exchangeability, identity, interchangeability, interchangeableness, likeness, match, par, parallel, parity, synonym, synonymy