polyfoam vs polyurethane foam

polyfoam and polyurethane foam both are nouns.

Word	Noun	Adjective	Verb	Adverb
polyfoam	Yes	No	No	No
polyurethane foam	Yes	No	No	No

As nouns, polyfoam and polyurethane foam are synonyms defined as:

polyfoam and polyurethane foam: a foam made by adding water to polyurethane plastics

polyfoam (noun)	polyurethane foam (noun)
a foam made by adding water to polyurethane plastics	a foam made by adding water to polyurethane plastics