Arc
Concave
Both words in one sentence
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Apothecary Alligator: In Lord Portico's study.The stuffed crocodile hanging from the ceiling; the leather-bound books, an astrolabe, convex and concave mirrors, odd scientific instruments Arc Words: Sometimes, there's nothing you can do.
Source: Literature / Neverwhere
Cite this Source
Concave and Arc. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/arc/concave
Arc & Concave. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/arc/concave>.
Concave or Arc. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/arc/concave.
Google Ngram Viewer shows how "arc" and "concave" have occurred on timeline