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
☆☆☆ KINDNESS; HOSPITALITY Noun 亲切亲切，关切，热情 sự tử tế, sự niềm nở
☆☆ UNKINDNESS; UNFRIENDLINESS Noun 不亲切不亲切，不热情 sự không thân thiện, sự lạnh lùng