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
☆☆☆ KNEE Noun 膝盖 đầu gối
☆☆ SINK TO ONE'S KNEES Verb 瘫坐，一屁股坐在地上 ngồi khuỵu xuống
☆☆ KNEEL Verb 跪 quỳ gối