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
☆☆ ELDEST SON Noun 长男长男 trưởng nam, con trai đầu, con trai cả
☆☆ ELDEST SON Noun 大儿子 con trai cả, con trai trưởng