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
☆☆ EMERGENCY; CONTINGENCY; BEING IN CRISIS Noun 非常紧急，非常 sự khẩn cấp, sự gấp rút, lệnh khẩn
☆☆ UNUSUAL Adjective 非常 하다 特殊，超常 khác thường