
Foam
Natural Occurrence
Foam often describes natural bubbles, typically seen with water or other liquids.

The river's rapids created foam along the edges.
By-product of Action
Foam can occur because of an action like shaking a liquid.

He shook the soda bottle, and foam erupted when opened.
Visual Description
Foam is a visual term often used to describe a white bubbly appearance.

A layer of foam coated the top of the hot latte.
Compare with
BubbleEffervescenceFizzFrothHeadLatherMousseSpumeSuds
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