Chute and Trough

Chute noun - Sloping channel through which things can descend.

Trough is a synonym for chute in channel topic. In some cases you can use "Trough" instead a noun "Chute", when it comes to topics like tray, slope, waterfall, ramp. popular alternative

Trough noun - A long hollow cylinder for carrying a substance (as a liquid or gas).

Chute is a synonym for trough in tray topic. You can use "Chute" instead a noun "Trough", if it concerns topics such as channel, waterfall. popular alternative