Air pipe
Duct and air pipe are semantically related in air passage topic. In some cases you can use "Duct" instead a noun phrase "Air pipe", when it comes to topics like air duct.
Duct
Duct noun - A long hollow cylinder for carrying a substance (as a liquid or gas).
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Synonyms for Duct
Air pipe and duct are semantically related in air passage topic. You can use "Air pipe" instead a noun "Duct", if it concerns topics such as air duct.
Cite this Source
Duct and Air pipe. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/air_pipe/duct
Air pipe & Duct. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/air_pipe/duct>.
Duct or Air pipe. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/air_pipe/duct.
Google Ngram Viewer shows how "air pipe" and "duct" have occurred on timeline