Opening up
Pump and opening up are semantically related. in discharge a projectile topic. In some cases you can use "Pump" instead a verb "Opening up".
Pump
Pump verb - To make short up-and-down movements.
Opening up and pump are semantically related. Sometimes you can replace term "Opening up" with "Pump", this verbs are similar.
Cite this Source
Pump and Opening up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/opening_up/pump
Opening up & Pump. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/opening_up/pump>.
Pump or Opening up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/opening_up/pump.
Google Ngram Viewer shows how "opening up" and "pump" have occurred on timeline