Etymology tree Proto-Indo-European *sem- Proto-Indo-European *somHós Proto-Slavic *samъ Old Polish sam Polish sam Proto-Slavic *-o- Old Polish -o- Polish -o- Polish samo- Proto-Indo-European *sed-der.? Proto-Slavic *xodъ Old Polish chód Polish chód Polish samochód Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Gothic -𐌰𐍂𐌴𐌹𐍃…