Englishfor English speakers
migration
Noun
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A migration is a large movement, usually of people or animals, to a new living place.
Every fall, the birds begin their migration from the cold northern areas to the southern regions where they will spend the winter.
policy
Noun
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A policy is an official rule or idea that explain how to act in certain situations.
The college policy is that teachers may not have any sexual relationship with students.
The government is suggesting a significant change in economic policy.
In at least one case there was a deliberate policy decision not to involve the police.
The policy at the movie theater said we should turn on phones off and be quiet, during the movie.