Tooltip
Tooltip is a short, auxiliary message that appears when users hover or focus on a component, offering them additional clarity.

A tooltip is a small hint or label that appears when a user hovers over or focuses on a certain interface element. It offers concise explanatory text without crowding the main display, vanishing once the cursor moves away or after a brief delay. This direct but light-touch approach clarifies unfamiliar icons or truncated text.
Tooltips are valuable for revealing details that don’t merit constant on-screen real estate, like short instructions, definitions, or function explanations. By presenting these mini descriptions only when needed, tooltips keep interfaces clutter-free yet informative, boosting user confidence and navigation ease.