Polyurethane foam and Polyurethane

Polyurethane foam noun - A foam made by adding water to polyurethane plastics.

Polyurethane and polyurethane foam are semantically related. In some cases you can use "Polyurethane" instead a noun phrase "Polyurethane foam".

Polyurethane noun - Any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber.

Polyurethane foam and polyurethane are semantically related. Sometimes you can replace phrase "Polyurethane foam" with "Polyurethane", this terms are similar.