hw
Hw is an initialism that can refer to several terms, with the intended meaning usually determined by context. In informal writing and classroom communication, hw most commonly stands for homework—the assignments given by teachers to be completed outside of class. In this usage, hw is often seen in student notes, chat messages, or online learning platforms.
In technology and engineering, HW (often written in uppercase) denotes hardware—the physical components of a computer,
Other domain-specific uses may occur, but they are less common and highly dependent on organization or field.