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 3.0EngWordtypeEtym.GbVie
OBSERVATORY Noun 展望台 瞭望台 đài viễn vọng, đài quan sát