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
☆☆ QUESTION CLOSELY Verb 辨别，探个究竟，追问到底 gạn hỏi, tra hỏi
☆ QUESTION CLOSELY; INTERROGATE; GRILL Verb 详加追问，详加盘问，仔细盘问 hỏi vặn vẹo, hỏi cặn kẽ