Boundary
Boundary noun - A real or imaginary point beyond which a person or thing cannot go.
National frontier and boundary are semantically related in border topic. In some cases you can use "National frontier" instead a noun "Boundary".
Nearby Word: bound
National frontier
Boundary and national frontier are semantically related in border topic. You can use "Boundary" instead a noun "National frontier".
Mutual synonyms
Cite this Source
National frontier and Boundary. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/boundary/national_frontier
Boundary & National frontier. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/boundary/national_frontier>.
National frontier or Boundary. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/boundary/national_frontier.
Google Ngram Viewer shows how "boundary" and "national frontier" have occurred on timeline