Bilateralities are the characteristic qualities or features that are shared between two parties. Some synonyms for bilateralities include reciprocity, mutuality, and symmetry. Reciprocity refers to a mutual exchange or interchange of something between two parties. Mutuality, on the other hand, denotes a mutual or reciprocal interest or relationship between two parties. Symmetry refers to a balanced proportion or equality between two things. Other synonyms for bilateralities may include interdependence, cooperation, coordination, and collaboration. All of these terms indicate a shared or mutual quality or feature between two parties and emphasize the importance of working together.