The one on the right is a box of chocolates. The individual ones in the box are chocolates. The wrapped ones I would call sweets. A bigger thing like Snickers I would call a chocolate bar. Something bigger that is just chocolate would be a bar of chocolate. Confusing!

Aud, good to see you here! In addition to the excellent grammar help given by the other commenters, note that (at least in American English), the word “chocolate” is usually only used if the product actually contains cacao (theobroma cacao). In America, We’d call the first picture “candy”, or possibly “candies” (as they are of a size that’s convenient for counting). For the second picture, we’d say “a box of chocolates” (even if some of the candies didn’t actually contain chocolate). As far as bars (not pictured), we usually say “candy bars” (countable, as we’re counting “bars”), unless they are almost entirely made of chocolate, in which case we could say “chocolate bars” (although “candy bar” is still possible). Cadbury bars are generally chocolate bars, but we might call Snickers or Milky Way (UK “Mars Bars”) “candy bars”, as they contain a lot of ingredients besides chocolate. In the US, “candy” is a general word for products composed mostly of sugar. The word can be countable, uncountable, or used as a noun-modifier. Personal note: I eat chocolate as pieces of chocolate grown and prepared locally with no artificial ingredients — just cacao powder (70%), cacao butter, and unrefined sugar. Based on the antioxidant count, I’m going to be young and healthy forever :)

It's all in the grammar. The things in your picture are chocolates (countable) while an 850g bar of Cadbury's Dairy Milk is chocolate (uncountable). It's that simple.

Hi Aud, You can say chocolate bar, popular chocolate bars to give clarity would be things like Mars / Snickers / Twix in the UK and to differentiate between a block of chocolate such as Cadburys Dairy Milk, you say a bar of chocolate and not a chocolate bar. So - Mars - i want a chocolate bar, maybe a Mars. Dairy Milk, say 200 grams - i want a bar of chocolate, maybe some Dairy Milk. I hope that this helps :)

Das eine sieht aus wie Nougat, das andere sind Pralinen. One looks like hazelnut nougat, the other looks like a box of pralines (chocolates)