Reciprocity

n. mutuality, state of being reciprocal, state of being common or shared

Reciprocity may refer to:Ethic of reciprocity, a general philosophical principle of most philosophies and religions. Reciprocity (social psychology), in-kind positive or negative responses of individuals towards the actions of others.Reciprocity norm (negotiation)Reciprocity (evolution), mechanisms for the evolution of cooperation.Reciprocity (international relations), a principle that favours, benefits, or penalties that are granted by one state to the citizens or legal entities of another, should be returned in kind.Reciprocity (cultural anthropology) and in relation to non-market economic exchange Reciprocity (mathematics)Reciprocity (electromagnetism), theorems relating sources and the resulting fields in classical electromagnetism.Serial reciprocity, where the benefactor of a gift or service will in turn provide benefits to a third party.
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Reciprocity, n a mutual agreement to exchange privileges, dependence, or relationships, as in an agreement between two governing bodies to accept [more]Reciprocity - Community and Resources

Noun
1. a relation of mutual dependence or action or influence
(synonym) reciprocality
(hypernym) relation
(hyponym) complementarity
2. mutual exchange of commercial or other privileges
(hypernym) interchange, reciprocation, give-and-take

(n.)
Reciprocal advantages, obligations, or rights; reciprocation.
  

(n.)
Mutual action and reaction.