Hi! Generally, sunny-side up eggs are cracked into a pan and cooked on a low flame until the whites are done, but the egg yolk is left raw or half-cooked. Fried eggs are cooked both sides; until the whites are done, then flipped over to cook the yolk. Fried eggs are also called over easy eggs sometimes. :)

<em>What is the difference between...?</em>

"Sunny side up" tells us how the egg is fried. You don't flip it over. If you flip the egg over, then it is still a fried egg, but not sunny side up.

It is as others have said. Where I live (Northeast U.S.) the two ways of ordering fried eggs are "sunny-side up," meaning the eggs are not flipped, and "over easy," meaning the egg is flipped to that it cooked on both sides.

Typically, "sunny-side up" means the yolk is about as cooked as the yolk of a soft-boiled egg, and runs when you cut it with your knife or pierce it with your fork. When cooked "over easy," the yolk is thoroughly looked, like the yolk of a hard-boiled egg, and is solid.