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
☆ SERIES; CHAIN Noun 一连一系列，一连串 hàng loạt, chuỗi
☆ CHAIN Noun 链条，链子 xiềng sắt, xích sắt