Englishfor English speakers
instrument
Noun
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An instrument is any thing people hold in their hand and use to do something.
A hammer is a heavy instrument.
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An instrument is something used to play music.
I enjoy playing music, my favorite instrument is the guitar.
module
Noun
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A module is a part of a system. It can often be changed at any time.
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In computing, a module is a section of a program.