Thermoplastics are materials that can be easily shaped and molded when heated and can be reshaped many times. There are a variety of synonyms for thermoplastic, including "heat plastic," "meltable plastic," and "thermoformable plastic." Other alternatives include "moldable plastic," "fluid plastic," and "plastic that can be shaped by heat." Additionally, certain types of thermoplastics may be referred to by their specific name, such as polyethylene, polypropylene, or polyvinyl chloride (PVC). These materials are widely used in various industries for their durable and versatile properties, making them a popular choice for manufacturing consumer goods and machinery parts.