plastic

Plastic (other names: plastic substance; less suitable: plastic material, artificial material) is a synthetic or semi-synthetic polymeric organic material. The main common property of plastics is permanent or temporary formability, formability (plasticity)

Additives
Plastics often contain additives to change their chemical or physical properties, e.g. elasticity, color, resistance, etc.

Division
thermoplastics - moldable under heat
reaktoplasts - after hardening, they no longer soften under the influence of heat