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
☆ ESSAY Noun 随笔随笔，散文 tản văn, tùy bút
☆ TRAVEL ESSAY Noun 纪行文纪行，游记 bài ký hành, bài nhật ký du lịch