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'.
Etymology Explore the origin of the 'core words'.

{n}	breakfast	(first meal of the day)	Frühstück {n}, Zmorge {f} [Swiss German], [Swiss German] Morgenessen {n}
{v}	breakfast	(to eat the morning meal)	frühstücken