Can uncountable nouns never be plural Water, for example, will never happen? There are some clouds in the sky, but the sun is shining

Can uncountable nouns never be plural Water, for example, will never happen? There are some clouds in the sky, but the sun is shining

If we emphasize the plural form of uncountable nouns, we can't use the plural form. For example, the plural of water or water
He waters flowers every day.
He waters the flowers every day
Here waters is the verb "water"
2. Cloud is a countable noun