Polystyrene
Part of speech: noun
Definition: A vinylic polymer of styrene, CH2CHphenyl. An alkane chain of benzene molecules, RCH2CHphenylR.
Polyester
Part of speech: adjective
Definition: Of, or consisting of polyesters
Part of speech: noun
Definition: Any polymer whose monomers are linked together by ester bondsA material or fabric made from polyester polymer
Example sentence: I did Polyester, and I don't regret one minute of it. It was wonderful.