84 entries under frontier topic. ×

8
border control(expression, outline, edge, border)
8
fringe(noun, outline, edge, border)
8
margin(noun, outline, edge, border)
8
perimeter(noun, outline, edge, border)
8
periphery(noun, outline, edge, border)
8
political science(expression, border, politics)
8
rim(noun, outline, edge, border)
8
skirt(noun, outline, edge, border)
8
verge(noun, outline, edge, border)
7
border checkpoint(expression, state, border, zone)
7
border zone(expression, state, border, zone)
7
geojurisprudence(noun, border, politics)
7
geopolitics(noun, border, politics)
6
political geography(expression, border, politics)
5
border(noun, outline, edge, brick)
5
boundary(noun, outline, edge, border)
5
brim(noun, outline, edge, border)
5
brink(noun, outline, edge, border)
5
circumference(noun, outline, edge, border)
5
end(noun, outline, edge, border)
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APASmart Define. (1970). border state thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/border_state/thesaurus/related
ChicagoSmart Define. 1970. "border state thesaurus" https://smartdefine.org/border_state/thesaurus/related (accessed September 24, 2026).
HarvardSmart Define 1970, border state thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/border_state/thesaurus/related>.
MLASmart Define. "border state thesaurus" 1 January 1970. Web. 24 September 2026. <https://smartdefine.org/border_state/thesaurus/related>