Interaction
Interaction is often seen in people’s conversation.
There is also interaction without conversation (e.g. body language).
In most action and interaction, actors must think about others and decide their actions.
In the process of social interaction, people symbolically communicate meanings to the
others. Then, the others interpret those symbols and respond to it.
(There is also non-symbolic interaction (stimulus), which does not involve thinking;
but it is not included here.)