1 (wiktionary) 2 (vi.wikipedia) 3 (en.wikipedia) 4 (glosbe)

Core Words Familarize yourself with the 'core words'.
Compounds Expand your vocabulary by studying more complex words built by the 'core words'.
Wordsense Learn about the wordsenses of the english term.

ETYMOLOGY

KOREAN 3.0 Eng Wordtype Etym. Gb Vie
☆☆ BOUNDARY; BORDER Noun 境界界限 ranh giới, biên giới
☆ BORDER; FRONTIER Noun 国境国境，边境 biên giới
☆ EDGE; RIM; BORDER Noun 边，边缘 rìa, mép