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
☆☆ PRINCIPAL Noun 校长校长 hiệu trưởng
☆ PRINCIPAL Noun 元金本金，本钱 tiền gốc, vốn
☆ PRINCIPAL Noun 本钱本金 tiền gốc, tiền vốn