Hello, cafercane—and welcome to English Forums. 'Candy' refers to the kind of confection. 'Candies' refers to the little pieces of the confection.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
cafercaneSomeone took all the candy.It means that someone took all the candies.
cafercaneSo, why is it singular?'Candy' is not singular there; it is uncountable, a kind of confection, as I said.