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.
background
Noun
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The background is what can be seen or heard behind other things that are closer or louder.
I was talking to Mary, but I heard the phone ringing in the background.
The play was good, and I especially liked the backgrounds that were used.
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The background of a person is his/her history.
The police checked his background to see if he had been in jail.
background
Verb
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To make a background.