This is the 10609th most frequent Russian word.
водоем
A body of water.
The word 'водоем' refers to a small lake or water body near a specific location.
Вблизи моего дома есть небольшой водоем.
Near my house, there is a small water body.
The term 'водоемы' is used in the plural form to discuss water bodies in a general context.
Водоемы служат важными источниками пресной воды.
Water bodies serve as important sources of fresh water.
Here, 'водоем' describes a specific water body around which an action—walking—occurred.