No, they are not the same. While 100% biodegradable products will eventually break down, they may leave behind harmful residues or take a long time to fully biodegrade. Compostable products, on the other hand, are specifically designed to break down into nutrient-rich soil through the process of composting. This means they can be safely returned to the earth and used to support plant growth. It's important to look for compostable certifications, such as the Biodegradable Products Institute (BPI) certification, when choosing environmentally friendly products.