Conversation (noun)

1. A talk, especially an informal one, between two or more people, in which news and ideas are exchanged.
2. A written or spoken exchange of ideas or opinions.
3. A discussion or debate.
4. A social interaction between individuals.

Origin:

From middle english conversacioun, from old french conversation, from latin conversatio ("a living together, companionship, intercourse, familiar discourse, conversation"), from conversor ("i live with, associate with"), from con- ("with") + versor ("i turn, live").

Examples:

1. The conversation turned to the weather.
2. I overheard their conversation in the next room.
3. The conversation between the two leaders was cordial.
4. The conversation was lively and interesting.
5. She initiated a conversation with the stranger sitting next to her on the bus.