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
☆☆☆ DIALOGUE; CONVERSATION; TALK Noun 对话聊天，对话 sự đối thoại, cuộc đối thoại
☆☆☆ BORED Adjective 无聊 buồn chán, tẻ nhạt
☆☆☆ BORING; TEDIOUS Adjective 无聊 buồn chán
☆ ONLINE CHAT Noun chatting 网上聊天 chatting
☆ CHAT; IDLE TALK; SMALL TALK Noun 杂谈闲话，闲谈，闲聊 câu chuyện vu vơ, câu chuyện linh tinh
☆ BORED Adjective 无聊 하다 无聊 buồn tẻ, tẻ nhạt
☆ TRIFLING; TRIVIAL; INSIGNIFICANT Adjective 不怎么样，差劲，无聊 vớ vẩn