Classical compass winds ("ζέφυρος") from the west – were added soon enough. The etymology of the names of the four archaic Greek winds is uncertain. Among tentative propositions is that "Boreas" might come from "boros", an old variant of "oros" (Greek for "mountains", which were to the north geographically). An alternative hypothesis is that it may come from "boros" meaning "voracious". Another is that it comes from the phrase "ἀπὸ τῆς βοῆς" ("from the roar"), a reference to its violent and loud noise. "Notos" probably comes from "notios" ("moist", a reference to the warm rains and storms brought from the south). "Eurus" and
Greek mythology existing literary evidence. Greek mythology has changed over time to accommodate the evolution of their culture, of which mythology, both overtly and in its unspoken assumptions, is an index of the changes. In Greek mythology's surviving literary forms, as found mostly at the end of the progressive changes, it is inherently political, as Gilbert Cuthbertson has argued. The earlier inhabitants of the Balkan Peninsula were an agricultural people who, using Animism, assigned a spirit to every aspect of nature. Eventually, these vague spirits assumed human forms and entered the local mythology as gods. When tribes from the north of the