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
☆☆ RESPONSE Noun 应答应答，回答 sự ứng đáp, sự trả lời
☆ NON-RESPONSE; UNRESPONSIVENESS Noun 无应答无应答，不答 không trả lời