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
☆☆☆ OUR Pronoun 我们 chúng tôi, chúng em, chúng con
☆ CLUE; KEY; LEAD Noun 端緖头绪，线索 chứng cớ
☆ CONVULSION; SPASM; JERK; FIT Noun 痉挛痉挛 chứng chuột rút, chứng co quắp