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
☆☆ CIRCULATION; VENTILATION Noun 流通流通 sự lưu thông
☆ VENTILATION Noun 换气换气，通风 sự thông gió, sự thông khí
☆ VENTILATION Noun 通风通风 sự thông gió