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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.

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