Openings
Safety valves and openings are semantically related. In some cases you can use "Safety valves" instead a noun "Openings".
Safety valves
Openings and safety valves are semantically related. Sometimes you can use "Openings" instead a noun phrase "Safety valves".
Cite this Source
Safety valves and Openings. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/openings/safety_valves
Openings & Safety valves. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/openings/safety_valves>.
Safety valves or Openings. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/openings/safety_valves.
Google Ngram Viewer shows how "openings" and "safety valves" have occurred on timeline