Englishfor English speakers
clay
Noun
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Clay is a type of mud or dirt that can be made into bricks and pots.
rock
Noun
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A hard substance that forms naturally in the Earth's surface.
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A form of music often played with guitars and drums.
rock
Verb
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To shake back and forth.
The boat rocked in the strong wind.
compaction
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noun
an increase in the density of something
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noun
(= crush)
the act of crushing