These are stone saws. Stone saws were used to cut items like wood or sticks.
These are stone arrow heads. Arrow heads where used on arrows to hunt animals for food.
These are stone blades. Stone blades where used to cut animal fur of and cut food.
these are vases. Vases carry different items for people. Vases have been used for a long time and are still being used. Vases are also used for decorating buildings.