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
☆☆☆ WALL Noun 壁墙壁，墙壁 bức tường
☆ ROCK WALL Noun 巖壁岩壁 vách đá
☆ PRECIPICE Noun 绝壁悬崖，绝壁 vách đá