What is referred to by 'cuprum'?

What is referred to by 'cupid bacchus pluto'? Based on the clue 'cupid is also called eros this 4 letter name hear...', what is the answer? Based on the clue 'cupolas are small domes but can be pointy instead ...', what is the answer? Based on the clue 'cuprite is an important ore at the bisbee arizona ...', what is the answer? Based on the clue 'curacao lies in the southern caribbean about 40 mi...', what is the answer? Based on the clue 'curare is added to this projectile to give it that...', what is the answer? What is referred to by 'cure all'? Based on the clue 'curiosity killed the cat but this brought it back', what is the answer?