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
☆☆☆ EARLIER; FIRST Adverb 先 trước
☆☆ BEFORE; EARLIER Adverb 先 trước, sớm hơn
☆ EARLIER; THE OTHER DAY Noun 前者前者 trước, vừa qua