Green things

Quick answer：

Green things refer to objects or substances that are of the color green. In various contexts, green can symbolize nature, health, or safety. For example, in botany, green is the color of most plants, which is due to the presence of chlorophyll. In environmentalism, green is often associated with sustainability and eco-friendliness. Additionally, green is a color commonly used in traffic signals and safety equipment, indicating caution or a safe state.