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
☆☆☆ TEXTBOOK Noun 敎科书教科书，教材 sách giáo khoa
☆☆☆ WRITING; TEXT Noun 文章 bài viết, đoạn viết, bài văn
☆ TEXT Noun 地文提示 nội dung câu hỏi
☆ ENGLISH TEXT; ENGLISH WRITING Noun 英文英文 anh văn
☆ CONTEXT Noun 脉络脉络，头绪，条理 mạch
☆ THE WHOLE TEXT Noun 全文全文 toàn văn