Reference
Capable of breaking down naturally through biological processes. Unlike "compostable," biodegradable claims often don't specify a timeframe or the conditions required -- some materials labeled biodegradable can still take decades under normal conditions.
A claim that net carbon emissions from an activity are zero, typically achieved by combining emissions reductions with purchased carbon offsets. Offset quality varies widely and is the most commonly scrutinized part of the claim.
The gap between what an environmental claim appears to mean and what the available evidence actually demonstrates, whether through vague language, hidden tradeoffs, or unsupported certifications.
A material capable of being collected and reprocessed into a new product through some recycling system that exists somewhere -- not a guarantee your local program accepts it.
A broad, unregulated marketing term implying a product or practice can continue long-term without depleting resources or causing undue harm. Not tied to any single legal definition.