A necklace is jewelry you wear around your neck. A necklace can be a simple gold or silver chain, a length of beads or gems, or a pendant hanging from a cord. As long as it's worn around the neck, it's a necklace.

An earring is jewelry you wear on your ear. Your favorite earrings might be tiny white pearls, or they might be long feathers that dangle to your shoulders. An earring is any kind of ring, stud, hoop, or dangling decoration that you clip on your earlobe or hook through a hole pierced in your ear.