Translation guide
A glass for drinking water, or a glass containing water. In Japanese, the word depends on context: a general drinking glass, a glass specifically for water, or a glass with water in it.
The learner wants to refer to the physical object: a glass used for drinking water.
The learner wants to refer to a glass that contains water, or to order a glass of water.
Polite way to say 'water'. In a restaurant, simply saying お水 will get you a glass of water.
Please get me a glass.
There is a glass on the table.
Often implies a more elegant or specific glass, like a wine glass or a glass for cold drinks. Can be used for water glasses, especially in restaurants or bars.
Can I have a water glass, please?
Literally 'a glass for water'. Used when you need to specify it's for water, not other drinks.
Please separate the water glasses and juice glasses.
Excuse me, can I have a glass of water?
Plain word for water. Can be used to ask for a glass of water in casual settings.
Can I get some water?
Specifically means 'cold water' served in restaurants. Often used by staff or when asking for cold water.
Cold water, please.
wine glass
In most Japanese restaurants, water is served automatically for free. If you need more, just say すみません、お水をください (Sumimasen, omizu o kudasai). You don't need to specify 'glass'.