Chats(A label for a tab that has a list of conversations for all methods (modalities) of communication, such as voice call or instant message, for past and present); conversation(A collection of communications (e-mail, IM, text messaging, voice mail, and so on) between two or more participants)
thread(An instant message or text message conversation between two or more participants); chat(A real-time conversation via computer using short instant messages between two or more participants. When a participant types a line of text and then presses the Enter key, that participant's words appear on the screens of the other participants, who can then respond in kind)
