Gap
Gap noun - A narrow opening between hillsides or mountains that can be used for passage.
Usage example: thought they were stuck until they found a gap in the mountain range that they could hike through
Nullah
Cite this Source
Nullah and Gap. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/gap/nullah
Gap & Nullah. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/gap/nullah>.
Nullah or Gap. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/gap/nullah.
Google Ngram Viewer shows how "gap" and "nullah" have occurred on timeline