Warm is "mainit" and cool is "malamig" in Tagalog.
Tagalog Translation of WATER SPINACH: kangkong
The Tagalog word for water chestnut is "singkamas."
"Tubig" in Tagalog means water.
Lye water in Tagalog is "tuba ng apog" or "gatas-gatasan."
pandilig
the warm water floats
tubig
...apulid
singkamas
Do you mean the actual glass itself is warm or the water inside? If the water is warm then its a glass of warm water What is the noun you want to modify -- the glass or the water? It's hard to imagine a warm glass containing cold water, but I suppose it's possible.
Warm water is little bit hotter than cold water. The temperature of warm water is higher than that of cold water