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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'.

{n}	tower	((figuratively) any item that is higher than it is wide)	Turm {m}
{n}	tower	(structure)	Turm {m}
{n}	tower	(Tarot card)	der Turm