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

HAN VIET: cương hảo 刚好

KOREAN 3.0	Eng	Wordtype	Etym.	Gb	Vie
☆	JUST IN TIME	Adverb		刚好，正好	đúng lúc, đúng dịp