Social interaction is a dynamic, changing sequence of social actions between individuals (or groups) who modify their actions and reactions according to those of their interaction partner(s). In other words, they are events in which people attach meaning to a situation, interpret what others are meaning, and respond accordingly.
Social interactions can be differentiated into:
In sociological hierarchy, social interaction is more advanced than behavior, action, social behavior, social action and social contact, and is in turn followed by more advanced concept of social relation. In other words, social interactions, which consist of social actions, form the basis for social relations.