Whats the difference between sultanas currants and raisins?

Dark raisins: These are the most common variety found in most markets, usually made from Thompson seedless grapes. Although they start as green grapes, the fruit naturally darkens as it dries.

• White or golden raisins: These are also called muscats and are generally made of white muscat grapes which are seeded, specially oven-dried (rather than by sun), and treated to retain their light color. Some golden raisins are dried Thompson seedless raisins which have been kept light by the use of sulfur dioxide.

• Sultanas: More popular in Europe, these raisins come from a seedless yellow grape and are usually softer and sweeter than other varieties. The American variety of sultana grape is the Thompson seedless.

• Currants: Although there is a gooseberry relative known as the currant, the dried currant raisin is actually made from Black Corinth grape called Zante. They are tiny, seedless, and very sweet but do bear a resemblance to the currant berry. The name confusion comes not only from the currant raisin's similar appearance to the currant berry, but also due to the similarity of the sounds of the fruit names, ie., currant sounds like Corinth, the variety of grape. Tiny dried currants are extremely sweet and aromatic.
Raisins are dried white grapes usually of the variety 'Muscatel'. The main producers are the USA, Turkey, Greece and Australia.
Sultanas are small raisins. They are seedless, sweet, pale golden in colour and come mainly from Turkey.
Currants are dried, black, seedless grapes originally produced in Greece. They were known as 'raisins of the sun'.