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
☆☆ CALCULATOR Noun 计算器/计算机计算器 máy tính
☆☆ MOUSE Noun mouse 鼠标 chuột máy tính
☆☆ LAPTOP; NOTEBOOK COMPUTER Noun notebook 笔记本电脑 máy tính xách tay
☆ HACKING Noun hacking 网络入侵，网络攻击 hacking, sự đột nhập vào máy tính