<P> The exact origins of the name Kubera are unknown . "Kubera" or "Kuvera" (कुवेर) as spelt in later Sanskrit, means "deformed or monstrous" or "ill - shaped one"; indicating his deformities . Another theory suggests that Kubera may be derived from the verb root kumba, meaning to conceal . Kuvera is also split as ku (earth), and vira (hero). </P> <P> As the son of Vishrava ("Fame"), Kubera is called Vaisravana (in the Pali language, Vessavana) and as the son of Ilavila, Ailavila . Vaisravana is sometimes translated as the "Son of Fame". The Sutta Nitapa commentary says that Vaisravana is derived from a name of Kubera's kingdom, Visana . Once, Kubera looked at Shiva and his wife Parvati with jealousy, so he lost one of his eyes . Parvati also turned this deformed eye yellow . So, Kubera gained the name Ekaksipingala ("one who has one yellow eye"). He is also called Bhutesha ("Lord of spirits") like Shiva . Kubera usually is drawn by spirits or men (nara), so is called Nara - vahana, one whose vahana (mount) is nara . Hopkins interprets naras as being water - spirits, although Mani translates nara as men . Kubera also rides the elephant called Sarvabhauma as a loka - pala . His garden is named Chaitrarath . </P> <P> Kubera also enjoys the titles "king of the whole world", "king of kings" (Rajaraja), "Lord of wealth" (Dhanadhipati) and "giver of wealth" (Dhanada). His titles are sometimes related to his subjects: "king of Yakshas" (Yaksharajan), "Lord of Rakshasas" (Rakshasadhipati), "Lord of Guhyakas" (Guhyakadhipa), "king of Kinnaras" (Kinnararaja), "king of animals resembling men" (Mayuraja), and "king of men" (Nararaja). Kubera is also called Guhyadhipa ("Lord of the hidden"). The Atharvaveda calls him the "god of hiding". </P> <P> In the Atharvaveda--where he first appears--and the Shatapatha Brahmana, Kubera is the chief of evil spirits or spirits of darkness, and son of Vaishravana . The Shatapatha Brahmana calls him the Lord of thieves and criminals . In the Manusmriti, he becomes a respectable Loka - pala ("world protector") and the patron of merchants . In the epic Mahabharata, Kubera is described as the son of Prajapati Pulastya and his wife Idavida and the brother of sage Vishrava . Kubera is described as born from a cow . However, from the Puranas, he is described as the grandson of Pulastya and the son of Vishrava and his wife Ilavida (or Ilivila or Devavarnini), daughter of the sage Bharadvaja or Trinabindu . </P>

In mythology what is the relation between ravan and kuber