Dei, delle, qualche, alcune
There is some water in the fridge.
* Offers/ requests
Would you like some water? Can I have some oranges, please?
There isn't any water in the fridge.
Is there any water in the fridge? Yes there is some. No, there isn't any!
There isn't any water. There is no water
* No= (adjective) not any
* None= (pronoun) not any
No, there is none.