Plexiglass and Polymethyl methacrylate

Plexiglass noun - A light transparent weather resistant thermoplastic.

Polymethyl methacrylate and plexiglass are semantically related. In some cases you can use "Polymethyl methacrylate" instead a noun "Plexiglass".

Polymethyl methacrylate noun - A transparent plastic used as a substitute for glass.

Plexiglass and polymethyl methacrylate are semantically related. Sometimes you can replace term "Plexiglass" with "Polymethyl methacrylate", this terms are similar.