Englishfor English speakers
data
Noun
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Data is information, such as facts, numbers, photographs, etc.
A study using experimental data from ten schools found no difference between methods.
collection
Noun
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A collection is a group of things of the same type. They are usually special in some way.
He has one of the biggest collections of paintings by Van Gogh.
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If you take a collection, you ask many people for money, for a particular reason.
The school took a collection for new books.
system
Noun
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A group of things that work together; a way of doing something.
This coloured paper is part of my system for keeping lists of people.