Englishfor English speakers
contact
Noun
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When mathx/math makes or has contact with mathy/math, they touch each other physically.
The trains in Tokyo are so crowded that everyone has to stand in close contact to everyone else.
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By extension, its use as a metaphor:
He wore dark glasses so that he wouldn't have to make eye contact with anyone.
"Did you tell Chris about lunch today?" "No, I wasn't able to get in contact with him."
contact
Verb
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If A contacts B, A telephones B or writes a letter or e-mail to B.
If I can help further please do not hesitate to contact me at 012-345-6789.
disk
Noun
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A disk is an object that is thin, flat, and circular.
A coin is a disk of metal.
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Something that looks like a disk.
Venus' disk blocked light from the Sun.
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A vinyl phonograph / gramophone record.
Turn the disk over after it has finished.
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A floppy disk.
He still uses floppy disks from 1979.
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A disc - either a CD-ROM, an audio CD, a DVD.
She burned some disks yesterday to back up the information on her computer.