Ground zero
Ground zero noun - A thing or place that is of greatest importance to an activity or interest.
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Synonyms for Ground zero
Mark and ground zero are semantically related. in aim topic. In some cases you can use "Mark" instead a noun phrase "Ground zero".
Mark
Mark noun - A person or thing that is made fun of.
Cite this Source
Mark and Ground zero. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/ground_zero/mark
Ground zero & Mark. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/ground_zero/mark>.
Mark or Ground zero. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/ground_zero/mark.
Google Ngram Viewer shows how "ground zero" and "mark" have occurred on timeline