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
☆ CLEARLY; DEFINITELY; OBVIOUSLY Adverb 确然 히 确然地，确实地，确凿地 một cách xác thực, một cách chắc chắn, một cách thấu đáo
☆ FIRM; SOLID Adjective 确固 하다 确切，坚定，确凿 vững chắc, vững bền