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
☆☆ BOW; BEND Verb 俯，低，耷拉 cúi
☆☆ BEND Verb 弯，弯曲 cúi, khom
☆ CLUB; BAT Noun 棒子，棒槌 dùi cui, chày
☆ WITH REPEATED NODS Adverb (无对应词汇) cúi lên cúi xuống, khom lên khom xuống