Here are 10 common eco-friendly words and what they mean: Sustainability: Using natural resources in a way that does not use them up or damage the environment for the future. Biodegradable: Able to break down naturally and safely into the earth without causing pollution. Conservation: The careful protection and saving of plants, animals, and natural resources. Recycle: Processing used materials, like paper or plastic, to make new products. Renewable: Energy or resources that can replace themselves naturally, such as solar or wind power. Compost: Decayed organic material, like food scraps and leaves, used as plant fertilizer. Organic: Grown or made without using artificial chemicals or synthetic pesticides. Ecosystem: A community of living things interacting with each other and their physical environment. Zero-waste: A lifestyle or system that tries to send zero trash to landfills or incinerators. Permaculture: A system of agricultural and social design that mimics natural ecosystems.