Polymer
Polymers are made up of very large molecules made up of many repeating units called monomers, which ultimately form this long polymer chain
Compound & Masterbach
A compound is a polymer blend mixed with additives, fillers, and reinforcements to achieve specific properties for end-use applications. A masterbatch is a concentrated mixture of additives or pigments in a carrier resin, used to enhance plastics without altering their base properties.