Smooth is an English word with multiple meanings:
1. Having an even and regular surface; free from perceptible projections, lumps, or indentations.
2. (of movement) Without jerks or jolts; steady and continuous.
3. (of a person or their behavior) Suave and unruffled.
4. (of a liquid) Having an even consistency; without lumps.
5. (music) Free from harshness of sound; flowing.
6. (informal) To make something easier or more pleasant.