Englishfor English speakers
artificial
Adjective
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Something that is made by people instead of being made by nature.
The silk flowers were not real. They were artificial.
circulation
Noun
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Circulation is the act of moving in a circle.
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Circulation is the act of passing from place to place or person to person.
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If something is in circulation, it is being passed around within a system.
The new bills will come into circulation next Friday.