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
☆ BEING ACCIDENTAL; BEING INCIDENTAL Noun 偶发的偶发的 tính ngẫu nhiên
☆ ACCIDENTAL; INCIDENTAL Determiner 偶发的偶发的，偶然的 mang tính ngẫu nhiên, một cách tình cờ