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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'.

{adj}	raven	(of the color of the raven; jet-black)	rabenschwarz
{n}	raven	(bird)	Rabe {m}, Kolkrabe {m}
{n}	raven	(prey; plunder; food obtained by violence)	Beute {f}