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
☆☆☆ BE SULTRY; BE SWELTERING Verb 闷热 nóng bức, nóng nực
☆☆ SULTRY; SWELTERING; MUGGY Adjective 湿热，闷热 oi bức, nóng bức
☆ SCORCHING; SULTRY Adjective 灼热 đau buốt