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
☆☆☆ SONG; MUSIC; SINGING Noun 歌，歌曲，唱歌 bài hát, ca khúc, việc ca hát
☆ SINGING ABILITY Noun 歌唱力唱功 khả năng ca hát
☆ CHOIR; SINGING TOGETHER Noun 合唱合唱 sự hợp xướng, bài hợp xướng