Curling iron and Tongs

Curling iron noun - A cylindrical metal home appliance that heats a lock of hair that has been curled around it.

Tongs and curling iron are semantically related in pair of pliers topic. In some cases you can use "Tongs" instead a noun phrase "Curling iron", when it comes to topics like pliers, forceps, tweezers.

Tongs noun - Any of various devices for taking hold of objects; usually have two hinged legs with handles above and pointed hooks below.

Curling iron and tongs are semantically related in pair of pliers topic. You can use "Curling iron" instead a noun "Tongs", if it concerns topics such as pliers, forceps, tweezers.