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
☆ PRECISION Noun 精密精密 sự tinh xảo
☆ TECHNIQUE Noun 技巧技巧，手法 sự tinh xảo, sự khéo léo, tài khéo