Reciprocity

n.	1.	Mutual action and reaction.
	2.	Reciprocal advantages, obligations, or rights; reciprocation. Reciprocity treaty a treaty concluded between two countries, conferring equal privileges as regards customs or charges on imports, or in other respects.

Noun	1.	reciprocity - a relation of mutual dependence or action or influence Synonyms: reciprocality
	2.	reciprocity - mutual exchange of commercial or other privileges

RECIPROCITY. Mutuality; state, quality or character of that which is reciprocal.
     2. The states of the Union are bound to many acts of reciprocity. The constitution requires that they shall deliver to each other fugitives from justice; that the records of one state, properly authenticated, shall have full credit in the other states; that the citizens of one state shall be citizens of any state into which they may remove. In some of the states, as in Pennsylvania, the rule with regard to the effect of a discharge under the insolvent laws of another state, are reciprocated; the discharges of those courts which respect the discharges of the courts of Pennsylvania, are respected in that state.

accord, accordance, affinity, agape, agreement, alternation, amity, balance, battledore and shuttlecock, bipartisanship, bonds of harmony, brotherly love, caritas, cement of friendship, charity, coaction, coadjuvancy, coadministration, coagency, cochairmanship, codirectorship, coequality, collaboration, collaborativeness, collectivism, collusion, commensalism, common effort, common enterprise, communalism, communion, communism, communitarianism, community, community of interests, commutation, compatibility, complicity, concert, concord, concordance, concurrence, congeniality, cooperation, cooperativeness, corelation, correlation, correlativism, correlativity, correspondence, counterchange, cross fire, duet, duumvirate, ecumenicalism, ecumenicism, ecumenism, empathy, equilibrium, equipollence, equivalence, esprit, esprit de corps, exchange, feeling of identity, fellow feeling, fellowship, frictionlessness, give-and-take, good vibes, good vibrations, happy family, harmony, identity, interchange, intermutation, interplay, inverse proportion, inverse ratio, inverse relationship, joining of forces, joint effort, joint operation, kinship, lex talionis, like-mindedness, love, mass action, measure for measure, morale, mutual admiration, mutual assistance, mutual support, mutual transfer, mutualism, mutuality, octet, oneness, peace, permutation, pooling, pooling of resources, proportionality, pulling together, quartet, quid pro quo, quintet, rapport, rapprochement, reciprocality, reciprocation, relativity, retaliation, septet, sextet, sharing, solidarity, something for something, symbiosis, symmetry, sympathy, symphony, synergism, synergy, team spirit, teamwork, tit for tat, transposal, transposition, trio, triumvirate, troika, understanding, union, unison, united action, unity