Necklace and Stickpin

Necklace noun - An ornamental chain or string (as of beads) worn around the neck.

Stickpin and necklace are semantically related In some cases you can use "Stickpin" instead a noun "Necklace".

Stickpin noun - A decorative pin that is worn in a necktie.

Necklace and stickpin are semantically related in precious stones topic. Sometimes you can use "Necklace" instead a noun "Stickpin".