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
☆☆☆ OLD PERSON; THE AGED; SENIOR CITIZEN Noun 老人老人 người cao tuổi, người già
☆ SINGLE ELDERLY PERSON HOUSEHOLD Noun 独居老人独居老人，空巢老人 ?