| Word | Definitions | Synonyms |
|---|---|---|
| foam | (noun) a mass of small bubbles formed in or on a liquid | Synonyms: froth |
| (noun) a lightweight material in cellular form; made by introducing gas bubbles during manufacture | - | |
| polyfoam | (noun) a foam made by adding water to polyurethane plastics | Synonyms: polyurethane foam |