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Plato says that people prefer the name Plouton, "giver of wealth," because the name of Hades is fear-provoking.[11] The name was understood as referring to "the boundless riches of the earth, both the crops on its surface—he was originally a god of the land—and the mines hidden within it."[12] What is sometimes taken as "confusion" of the two gods Plouton and Ploutos ("Wealth") held or acquired a theological significance in antiquity. As a lord of abundance or riches, Pluto expresses the aspect of the underworld god that was positive, symbolized in art by the "horn of plenty" (cornucopia),[13] by means of which Plouton is distinguished from the gloomier Hades.[14]

https://en.wikipedia.org/wiki/Pluto_(mythology)