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
☆☆ INSTANT; MOMENT; A FLASH OF TIME; BEING IN THE WINK OF AN EYE Noun 한 瞬间一瞬间，一眨眼，一刹那，一转眼，刹那 một khoảnh khắc, phút chốc