Birch rod and Birch-rod

Birch rod noun - A switch consisting of a twig or a bundle of twigs from a birch tree; used to hit people as punishment.

Birch-rod and birch rod are semantically related. In some cases you can use "Birch-rod" instead a noun phrase "Birch rod".

Birch rod and birch-rod are semantically related. Sometimes you can replace phrase "Birch rod" with "Birch-rod", this phrases are similar.