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
☆☆ GAS RANGE Noun gas range 煤气灶 bếp ga
☆☆ GAS Noun gas 气，气体 khí
☆ GREENHOUSE GASES Noun 温室 gas 温室气体 khí nhà kính
☆ EXHAUST; WASTE GAS Noun 排气 gas 废气，尾气 khí thải