Mutuality

['mjuːtʃʊ'ælətɪ] or [tjʊtʃʊ'æləti]

(noun.) a reciprocal relation between interdependent entities (objects or individuals or groups).

(noun.) a reciprocality of sentiments; 'the mutuality of their affection was obvious'.

Edited by Angus--From WordNet

(n.) The quality of correlation; reciprocation; interchange; interaction; interdependence.

(n.) Reciprocity of consideration.

Edited by Ben