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
☆ BEING OFFICIAL Noun 事务的事务性的，文书上的 tính văn phòng
☆ OFFICIAL Determiner 事务的事务性的，文书上的 mang tính chất văn phòng