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
☆☆☆ PLANE; AIRPLANE Noun 飞行机飞机 máy bay, phi cơ
☆ AIRPLANE; AIRCRAFT; PLANE Noun 航空机飞机，航空器 máy bay