Answer:
All characteristics that are common to a group are called class characteristics. For example, given a box of gloves; each glove from that box will be the same. Same color, same texture, same material, same size. This is a classic example of class characteristics.
On the other hand, individual characteristics from a glove from this box would include fingerprints (inside the glove because it was worn and/or DNA from the person wearing the glove).
Given a scene, if a pair of gloves were found at a scene, the gloves cannot be individualized to the box because gloves have no individual markings, every glove from this company looks the same as those found at the scene.