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
☆☆☆ COMPLETELY; PERFECTLY Adverb 完全 히 完全地，完美地，彻底地 một cách hoàn chỉnh, một cách hoàn thiện, một cách trọn vẹn