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
☆ RUT; PLATEAU Noun 停滞期停滞期 thời kì đình trệ, thời kì ngưng trệ
☆ PLATEAU Noun 高原高原 cao nguyên, vùng cao