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
☆☆ UNDERSTAND Verb 理解，了解 hiểu cho
☆ HERE AND THERE Noun 处处，到处，多处 nhiều chỗ, nhiều nơi
☆ VAN Noun 乘合车中巴，面包车 xe nhiều chỗ, xe khách