الْأَعْيَانِ وَالْأَعْرَاضِ
Individuated things and their attributes or accidents.
Aʿyān are identifiable things, such as a tree or stone. Aʿrāḍ are properties or states that belong to a bearer—for example, color, movement, or rest.
Recognizing a tree is not precisely the same as recognizing the green color of its leaves. The former concerns a thing; the latter concerns one of its properties. Both can be investigated without conflating the categories.