Consider this a public service announcement, so you will never face the awkward predicament of confusing one of these for the other, especially since TTB has approved wines made from dozens of different types of berries. We will try to show many of them, starting with these.
The berry on the left is the marionberry. It is used to make this wine from Scatter Creek of Tenino, Washington. This berry is closely related to the blackberry and “the relative complexity of its flavor has led to a marketing label as the ‘Cabernet of Blackberries.’ The more powerful flavor of the marionberry has led to it dominating current blackberry production.”
It is not to be confused with Marion Barry, Washington, DC’s practically unstoppable mayor, from 1979 to 1999.
On the right is a thimbleberry. It is used to make this Threefold Vine wine in Garden, Michigan. Wiki says “Thimbleberry fruits are larger, flatter, and softer than raspberries, and have many small seeds. Because the fruit is so soft, it does not pack or ship well, so thimbleberries are rarely cultivated commercially.”