Prajapati (Prajāpati) is a Vedic deity of Hinduism. In both earlier and later literature, Prajapati is the creator-god Brahma, but the term also connotes many different gods, depending on the Hindu text, ranging from being the creator god to being same as one of the following: Vishvakarma, Agni, Indra, Daksha, and many others, reflecting the diverse Hindu cosmology. In classical and medieval era literature, Prajapati is the same as the metaphysical concept called Brahman ( the Universal Soul) as Prajapati-Brahman (Svayambhu Brahman), and Brahman is described as the primordial matter which is present in Prajapati. Prajapati (Sanskrit: प्रजापति) is a compound of "praja" (creation, procreative powers) and "pati" (lord, master). The term means "lord of creatures", or "lord of all born beings". In the later Vedic texts, Prajapati is a distinct Vedic deity, but whose significance diminishes. Later, the term is synonymous with other gods, particularly Brahma. Still later, the term evolves to mean any divine, semi-divine or human sages who create something new. The origins of Prajapati are unclear. He appears late in the Vedic layer of texts, and the hymns that mention him provide different cosmological theories in different chapters. He is missing from the Samhita layer of Vedic literature, conceived in the Brahmana layer, states Jan Gonda. Prajapati is younger than Savitr, and the word was originally an epithet for the sun. His profile gradually rises in the Vedas, peaking within the Brahmanas. Scholars such as Renou, Keith and Bhattacharji posit Prajapati originated as an abstract or semi-abstract deity in the later Vedic milieu as speculations evolved from the archaic to more learned speculations. A possible connection between Prajapati (and related figures in Indian tradition) and the Prōtogonos (Πρωτογόνος, literally "first-born") of the Greek Orphic tradition has been proposed: Protogonos is the Orphic equivalent of Vedic Prajapati in several ways: he is the first god born from a cosmic egg, he is the creator of the universe, and in the figure of Dionysus— a direct descendant of Protogonos—worshippers participate in his death and rebirth.