Ключевые слова: associated, bilateral, closely, collectively, collision, combination, communal, connected, contact, convertible, cooperation, correlative, dependent, interactive, interchange, interchangeable, interindependent, intermutual, jointly, mutualy, partaken, participated, partnership, public, reciprocal, related, relationship, requited, respective, return, shared, simultanously, stable, synchronize, tandem, union, unision, united,