The soap foams up when you rub it between your hands.

The waves foamed up as they crashed against the rocks.

The dog foams at the mouth when it gets excited.

The dog foamed at the mouth.

The dog was foaming at the mouth.

The soap is foaming up in my hands.

Foaming agents are used in the production of various products.

I bought new memory foams for my bed.

Spin foams are a topic of research in quantum gravity.

I have many FOAFs who share my interests.