Here's why:
* Collective nouns refer to a group of people, animals, or things considered as a single unit (e.g., team, flock, crowd).
* Water is a mass noun, meaning it refers to an uncountable substance. You can't count individual "waters," just amounts (e.g., a glass of water, a gallon of water).
Examples of collective nouns:
* Team: A group of people working together
* Fleet: A group of ships
* Swarm: A large group of insects
Examples of mass nouns:
* Water: A liquid substance
* Sand: A granular substance
* Air: A gaseous substance