Water piping and Water pipe

Water pipe and water piping are semantically related in waterway topic. In some cases you can use "Water pipe" instead a noun "Water piping", when it comes to topics like conduit, waterline, water main.

Water pipe noun - An oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water.

Water piping and water pipe are semantically related in waterway topic. You can use "Water piping" instead a noun phrase "Water pipe", if it concerns topics such as conduit, waterline, water main.