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.

KOREAN 3.0	Eng	Wordtype	Etym.	Gb	Vie
☆☆	MAYBE; PERHAPS; POSSIBLY	Adverb		或许，也许	có khi, biết đâu
☆☆	OCCASIONALLY	Adverb		有时	có khi, có lúc
☆	OCCASIONALLY; SOMETIMES; FROM TIME TO TIME	Adverb	间间 이	断断续续，时有	chốc chốc, thi thoảng, đôi khi, có khi