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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}	interval	(distance in space)	Abstand {m}, Zwischenraum {m}
{n}	interval	(intermission) SEE: intermission ::
{n}	interval	(music: distance in pitch of notes)	Intervall {n}
{n}	interval	(period of time)	Intervall {n}
{n}	interval	(sports:half time) SEE: half time ::