A message is a piece of information or communication that is sent from one person, system, or device to another. It can take various forms, including:

1. Written Message: A text-based form of communication, such as an email, letter, or text message. 2. Verbal Message: Spoken words conveyed directly in person, via phone, or through other audio means. 3. Non-verbal Message: Information communicated through gestures, facial expressions, or body language. 4. Digital Message: Data transmitted electronically, like notifications, alerts, or multimedia messages. 5. Coded Message: Information encoded in a specific format or language, often requiring decryption to understand.

Messages serve the purpose of sharing information, expressing emotions, giving instructions, or facilitating interaction between individuals or systems.