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
☆☆ DISAPPOINTMENT Noun 失望失望 sự thất vọng
☆ DISAPPOINTMENT; DESPAIR Noun 落心灰心，失望，垂头丧气 sự thất vọng