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.