Which cloud type is described as having a generally grey appearance with a uniform base?

The cloud type that is identified by a generally grey appearance with a uniform base is stratus clouds. Stratus clouds form in low, horizontal layers that often cover the entire sky, resembling a thick fog. Their uniform base contributes to their characteristic look and often leads to overcast conditions. These clouds can produce light precipitation, such as drizzle or mist, but they do not typically exhibit the towering structure associated with other types of clouds like cumulus or nimbostratus.

In contrast, cumulus clouds are fluffy with a puffy, cotton-like appearance and are typically white, indicating a fair weather scenario. Cirrocumulus clouds are high-altitude clouds that look like small white patches often arranged in rows at high altitudes, and they do not have a uniform grey look. Nimbostratus clouds are also grey and can bring continuous rain, but they have a more extensive depth and are less uniform than stratus clouds.