I have 120 acres and these bushes are growing in partial shade along a two-track driveway. Can you identify them? Are they safe to eat? If so, what is their flavor (sweet or sour)? Would they be good for wine making? How do I prune and/or maintain the plant?

Bush 1 has toothed leaves and round dark berries with dark flesh and several seeds inside at the base of branch.
Bush 2 has smooth leaves and smaller blue/grey round berries with white flesh and a pit in a bunch.