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: tăng thiêm 增添

KOREAN 3.0	Eng	Wordtype	Etym.	Gb	Vie
☆	ADDITION	Noun	添加	添加，附加，增添	sự thêm vào