Complex sentence: In the UK, Europe and most Commonwealth countries, a tablespoon is a type of large spoon usually used for serving; a spoon larger than a teaspoon used for eating would normally be called a dessert spoon or the soup spoon.
Split into simpler sentences: In the UK, Europe and most Commonwealth countries, a tablespoon is a type of large spoon usually used for serving. In countries where a tablespoon is a serving spoon, the nearest equivalent to the US tablespoon is either the dessert spoon or the soup spoon.