Scones
The scone is a small British quick bread, traditionally hailing from both Scotland and the South West England. They are usually made of wheat, barley or oatmeal, with baking powder as a leavening agent. The scone is a basic component of the cream tea or Devonshire tea. It is generally speaking similar to but different from both a tea cake and a currant bun.

Pronounciation
/skɒn, skəʊn/
There are two possible pronunciations of the word scone: the first rhymes with gone and the second rhymes with tone. In US English the pronunciation rhyming with tone is more common. In British English the two pronunciations traditionally have different regional and class associations, with the first pronunciation associated with the north of England and the northern working class, while the second is associated with the south and the middle class.

Origin
early 16th century (originally Scots): perhaps from Middle Dutch schoon(broot) - fine(bread)

Regional Varieties
British scones are often lightly sweetened, but may also be savoury. They frequently include raisins, currants, cheese or dates. In Scotland and Ulster, savoury varieties of scone include soda scones, also known as soda farls, and potato scones, normally known as tattie scones, which resemble small, thin savoury pancakes made with potato flour. Potato scones are most commonly served fried in a full Scottish breakfast or an Ulster fry. The griddle scone (or "girdle scone" in Scots) is a variety of scone which is fried rather than baked. This usage is also common in New Zealand where scones, of all varieties, form an important part of the traditional cuisine.

Other common varieties include the dropped scone, or drop scone, like a pancake, after the method of dropping the batter onto the griddle or frying pan to cook it, and the lemonade scone, which is made with lemonade and cream instead of butter and milk. Also, there is the fruit scone or fruited scone, which contains currants, sultanas, peel and glace cherries, which is just like a plain round scone with the fruit kneaded into the dough.

In some countries one may also encounter savoury varieties of scone which may contain or be topped with combinations of cheese, onion, bacon, etc.

sources: Oxford Dictionaries, Wikipedia