A secondary or incidental action or event that occurs alongside the main action.

सहक्रियात्मक या अप्रत्यक्ष क्रिया या घटना।

English Usage: The film had a lot of interesting by-play between the two characters.

Hindi Usage: फिल्म में दो पात्रों के बीच बहुत सारे रोचक सहक्रियात्मक घटनाएं थीं।