Englishfor English speakers
indexing
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noun
the act of classifying and providing an index in order to make items easier to retrieve
movement
Noun
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A movement, is a group of people who are all working for the same idea.
The labour movement protects the rights of the workers.
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A movement is a part in a musical composition such as a sonata or symphony.
The first movement of the "Moonlight" Sonata is very famous.