What are the characteristics of light quality in sunny and cloudy days in photography?

This difference is big. Sunny days are direct light with directionality and strong light, while cloudy days are scattered light with no obvious directionality and soft light. According to the requirements of shooting genre, you can shoot various genres such as scenery, portrait and ecology on sunny days, but it is not suitable to shoot scenery on cloudy days. However, it should be noted that the direct sunlight at noon belongs to the "poolside" light and cannot be used for shooting.