Most deities were depicted in several ways. Hathor could be a cow, cobra, lioness, or a woman with bovine horns or ears. By depicting a given god in different ways, the Egyptians expressed different aspects of its essential nature. The gods are depicted in a finite number of these symbolic forms, so they can often be distinguished from one another by their iconographies. These forms include men and women (anthropomorphism), animals (zoomorphism), and, more rarely, inanimate objects. Combinations of forms, such as deities with human bodies and animal heads, are common. New forms and increasingly complex combinations arose in the course of history, with the most surreal forms often found among the demons of the underworld. Some gods can only be distinguished from others if they are labeled in writing, as with Isis and Hathor. Because of the close connection between these goddesses, they could both wear the cow-horn headdress that was originally Hathor's alone.