Hot Water
noun
The kanji and the word are exactly the same. That means they share meanings as well.
ゆ
This has the same reading as the kanji you learned, meaning you know the reading!
お湯を飲むと、体が温かくなります。
Drinking hot water will warm your body.
そのマスカラはお湯じゃ落ちなさそうだね。
It looks like the mascara doesn't come off with hot water.
お湯を沸かしてくれないか？
Could you boil some water?