What's the difference between cloudy days and cloudy days?

There are the following differences between them:

1, different coverage: cloudy usually means that the coverage of clouds in the sky is less, and some blue sky and sunshine can be seen, but some clouds are floating in the air. A cloudy day means that the clouds in the sky are thick, there is almost no blue sky and sunshine, and the sky is gray.

2, the light intensity is different: on cloudy days, sunlight can penetrate the clouds and illuminate the ground, so the light is stronger; Cloudy day, thick clouds, sunlight can not reach the ground, the light is dim.

3. Different humidity: on cloudy days, the air is relatively dry and the humidity is relatively low; In cloudy weather, the air humidity is relatively high due to thick clouds.