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
☆☆ UNCLE'S HOUSE Noun 叔叔家 nhà chú
☆☆ PROFESSIONAL; SPECIALIST Noun ←professional 专业人员，专家 người chuyên nghiệp, nhà chuyên môn, chuyên gia
☆ CLERIC Noun 圣职者神职人员 nhà chức sắc tôn giáo, vị thánh chức