Englishfor English speakers
error
Noun
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An error is something which is accidentally not correct.
The bank made an error and gave me too much money.
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An error can refer to a computer error.
I keep getting errors on my computer program.
boundary
Noun
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A boundary is the line around something's outside edge.
The elephants have to live within the boundary of the park or risk being shot.
There have been many times in their lives when the boundaries between their personal and professional lives have disappeared.
More manufactured goods are crossing international boundaries every day.
An international commission that regulates the boundary waters between the U.S. and Canada.