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: thượng ngọ 上午

KOREAN 3.0	Eng	Wordtype	Etym.	Gb	Vie
☆☆☆	MORNING	Noun	午前	上午	buổi sáng