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
☆ CLUE; KEY; LEAD Noun 端緖头绪，线索 chứng cớ
☆ HINT; CLUE; TIP Noun hint 提示，暗示，示意 điều gợi ý