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
☆☆☆ LETTER OF NOTICE; NOTICE; INTRODUCTION Noun 案内文介绍书，说明书，通知 tờ hướng dẫn
☆☆ DIRECTIONS; INSTRUCTIONS; MANUAL Noun 说明书说明书 bản giải thích, bản hướng dẫn