Duct and Pipe line

Duct noun - A long hollow cylinder for carrying a substance (as a liquid or gas).

Pipe line and duct are semantically related in pipe topic. In some cases you can use "Pipe line" instead a noun "Duct", when it comes to topics like conduit, oil pipeline.

Nearby Words: ducted, ducting, ductless

Duct and pipe line are semantically related in pipe topic. You can use "Duct" instead a noun phrase "Pipe line", if it concerns topics such as conduit, oil pipeline.