The fruit has yellow or whitish flesh, a delicate aroma, and a skin that is either velvety (peaches) or smooth (nectarines) in different cultivars. ... Cultivated peaches are divided into cling stones and freestones, depending on whether the flesh sticks to the stone or not; both can have either white or yellow flesh.
An apricot is a fruit, or the tree that bears the fruit, of several species in the genus Prunus (stone fruits). Usually, an apricot tree is from the species P. armeniaca, but the species P. brigantina, P. mandshurica, P. mume, and P. sibirica are closely related, have similar fruit, and are also called apricots.
Nice Tip: Refrigerating apricots will dramatically impair their ripening process. Leave them out at room temperature until they are ripe, then refrigerate them.