Step dancing and Tap dancing

Step dancing noun - Dancing in which the steps are more important than gestures or postures.

Tap dancing and step dancing are semantically related. In some cases you can replace phrase "Tap dancing" with "Step dancing", this phrases are similar.

Tap dancing noun - A dance step tapped out audibly with the feet.

Step dancing and tap dancing are semantically related. Sometimes you can use "Step dancing" instead a noun phrase "Tap dancing".