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
☆☆ POLISHED; REFINED Adjective 洗练/洗鍊 되다 干练，老练 trau chuốt, mạch lạc, tinh tế
☆ NOBLE; LOFTY; REFINED; ELEGANT; SOPHISTICATED Adjective 高尙 하다 高尚，高雅 cao thượng, cao quý