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.

KOREAN 3.0	Eng	Wordtype	Etym.	Gb	Vie
☆☆☆	START; BEGINNING	Noun	始作	开始，开端，开头，起始，起头	sự bắt đầu, bước đầu
☆	BEGINNING; START; OPENING	Noun	开始	开始	sự khai mạc, sự khai trương
☆	BEGINNING; ROOT; SOURCE	Noun	发端	开端，开始，头儿	căn nguyên, khỏi nguồn