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
☆☆ ROOT Noun 根 rễ cây
☆ BEGINNING; ROOT; SOURCE Noun 发端开端，开始，头儿 căn nguyên, khỏi nguồn
☆ ROOT AND STEM Noun 根干根干，基干 gốc rễ
☆ ROOT; SOURCE Noun 根源源头，根源 khởi nguồn, đầu nguồn
☆ TAKE ROOT Verb 生根，扎根 bén rễ, bám rễ