Honeydukes Sweet Shop
In Hogsmeade there is a sweet shop called Honeydukes.
The Honeydukes in Hogsmeade
Honeydukes. It is one of the most popular wizard confectionaries in the world and carries all types of wizarding sweets including Chocolate Frogs, Cauldron Cakes, Bertie Bott's Every Flavour Beans and hundreds of other items. The shop is owned by Ambrosius Flume and his wife who live above the shop. There is a secret trapdoor in the cellar of Honeydukes that leads to the third floor of Hogwarts.
Madam Puddifoot's Tea Shop or The three broomsticks Inn but the three broomsticks in is actually a pub :)
The sweets are placed near the tills in shops because the shopkeeper can guarantee that is the place that you will definitely be at some point during the time you are in that shop, and of course, sweets are very tempting and if you feel hungry, you are very likely to pick one up!
In your example, jar of sweets, is the collective noun; other collective nouns are a box of sweets, a tin of sweets, or a shop of sweets.
A tuck shop is a shop that sells sweets and food (crisps, chocolate etc.)
Honeydukes, in Hogsmeade.
A sweetshop will sell sweets (candies in USA!) and a cake shop will sell cakes. Though, it is more likely that a shop will sell both products. The person selling sweets and cakes could be called a 'Confectioner.'
In the given sentence, if 'I' read it rightly, I went to the shop for sweets, 'I' is the personal pronoun as 'I' is representing someone and is being used in place of a proper noun.
a store that sells candy and other sweets
Buy it from a shop. In Scotland it is called sweets.