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
☆☆ DOWN PAYMENT; EARNEST; DEPOSIT Noun 契约金合同预付款，定金 tiền đặt cọc
☆ ADVANCE PAYMENT; PREPAYMENT Noun 先拂预付 việc trả trước, việc ứng trước