Usage patterns
〈物〉は銅でできているto be made of copper
This statue is made of copper.
銅を獲得するto win a bronze medal
She won a bronze medal at the Olympics.
銅を含むto contain copper (of an alloy or ore)
Bronze is an alloy that contains copper and tin.
銅に終わるto end up with a bronze medal (falling short of gold or silver)
He lost in the final, so it ended up being a bronze medal.
