Contaminated materials and Toxic waste

Toxic waste and contaminated materials are semantically related in environmental pollutant topic. In some cases you can use "Toxic waste" instead a noun phrase "Contaminated materials".

Toxic waste noun - Poisonous waste materials; can cause injury (especially by chemical means).

Contaminated materials and toxic waste are semantically related in hazardous waste topic. You can use "Contaminated materials" instead a noun phrase "Toxic waste".