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 In Egyptian belief , names express the fundamental nature of the things to which they refer . In keeping with this belief , the names of deities often relate to their roles or origins . The name of the predatory goddess Sekhmet means  powerful one  , the name of the mysterious god Amun means hidden one  , and the name of the goddess Nekhbet , who was worshipped in the city of Nekheb , means  she of Nekheb  . But many other names have no certain meaning , even when the gods who bear them are closely tied to a single role . The names of the sky goddess Nut and the earth god Geb do not resemble the Egyptian terms for sky and earth . The Egyptians also devised false etymologies giving more meanings to divine names . A passage in the Coffin Texts renders the name of the funerary god Sokar as sk r , meaning cleaning of the mouth  , to link his name with his role in the Opening of the Mouth ritual , while one in the Pyramid Texts says the name is based on words shouted by Osiris , connecting Sokar with the most important funerary deity . The gods were believed to have many names . Among them were secret names that conveyed their true natures more profoundly than others . To know the true name of a deity was to have power over it . The importance of names is demonstrated by a myth in which Isis poisons the superior god Ra and refuses to cure him unless he reveals his secret name to her . Upon learning the name , she tells it to her son , Horus , and by learning it they gain greater knowledge and power . In addition to their names , gods were given epithets , like  possessor of splendor  , ruler of Abydos  , or  lord of the sky  , that describe some aspect of their roles or their worship . Because of the gods ' multiple and overlapping roles , deities can have many epithets — with more important gods accumulating more titles — and the same epithet can apply to many deities . Some epithets eventually became separate deities , as with Werethekau , an epithet applied to several goddesses meaning  great enchantress , which came to be treated as an independent goddess . The host of divine names and titles expresses the gods ' multifarious nature . fill in the blank  :   In Egyptian belief , names express the fundamental __________________ of the things to which they refer . 
Output:
 nature 