Tab vs. Tap: Know the Difference "Tab" generally refers to a small flap or marker, while "Tap" can mean to lightly hit something or access a resource like water. Key Differences A small flap or extension often used in file folders for labeling, Tab is a distinctive piece designed for easy handling or manipulation.

Taps control the flow of water on/off and are typically simpler in design than faucets which regulate water temperature and flow rate. In US English, the word “faucet” is more common, while in British English, the term “tap” is mostly used.