Main entry: reciprocal, mutual
Definition: concerning each of two or more persons or things; especially given or done in return
Usage: reciprocal aid; reciprocal trade; mutual respect; reciprocal privileges at other clubs
Antonyms: nonreciprocal
Definition: not reciprocal
Main entry: mutual, common
Definition: common to or shared by two or more parties
Usage: a common friend; the mutual interests of management and labor
Antonyms: unshared
Definition: not shared