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
☆☆ BE EATEN; BE SWALLOWED Verb 被吃掉 bị ăn
☆☆ SWALLOW Verb 咽，吞下 nuốt
☆ SWALLOW Noun 燕子 chim én
☆ KEEP IN ONE'S MOUTH; NOT SWALLOW Verb 含 ngậm