Waffle-iron and Waffle iron

Waffle iron and waffle-iron are semantically related. In some cases you can replace phrase "Waffle iron" with "Waffle-iron", this phrases are similar.

Waffle iron noun - A kitchen appliance for baking waffles; the appliance usually consists of two indented metal pans hinged together so that they create a pattern on the waffle.

Waffle-iron and waffle iron are semantically related. You can use "Waffle-iron" instead a noun phrase "Waffle iron".