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
☆ ABJECT FAILURE; BIG TROUBLE Noun 狼狈狼狈，糟糕，失败 sự thất bại, sự sai lầm
☆ WOLF Noun 狼 con chó sói