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
☆☆ SIGH Noun 叹气 thở dài, thở phào
☆ LAMENTATION; SIGH Noun 歎息/叹息叹息，叹气 sự thở dài, cái thở dài