Ring-bark and Rings

Rings and ring-bark are semantically related. In some cases you can replace term "Rings" with "Ring-bark", this terms are similar.

Rings noun - Gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises.

Ring-bark and rings are semantically related. You can use "Ring-bark" instead a verb "Rings".