Whether you’re eating them whole as a snack or chopping them to top a salad or pizza, black olives add a bit of extra nutrition to your diet. The tiny fruit , olives are considered a fruit because they contain a seed and develop from a flower is rich in monounsaturated fat, fiber, beta carotene and vitamin E. However, as a high-fat fruit, black olives are a concentrated source of calories, and they're also high in sodium, so enjoy them in moderation.
Black olives are fruits from the olive tree which are picked when fully grown and fully ripe while the green ones are not ripe yet. Black olives are sweeter in taste than the green ones (which are salty and bitter) and both have a seed inside them.