Like grass, green and nature are closely related to plants. These forty kinds of greens are very clear. When you think of many names of green tones, you can easily think of them: sea green, emerald and grass green.
symbolic meaning
In the Middle Ages, green represented evil spirits (including dragons) and sometimes love. These symbolic meanings are not obvious in modern times.
Green means allowing action, because green means feasible in traffic signals. The green channel is its extension, which means fast and convenient, and all the way is unimpeded; Green is also widely used in emergency exit signs introduced since 1980s (some countries or regions still use red, but in the symbolic sense of color, it may be regarded as an emergency exit that is prohibited by some people, thus causing confusion in interpretation).
Green can play a protective role, so the army and wild teams usually use green uniforms. The color of military uniforms in most countries in the world is based on green. Things such as shelters, sanitation facilities and ambulances are usually represented in green.