Englishfor English speakers
day
Noun
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A day is a measure of time.
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24 hours
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Seven days make one week
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The time between midnight and the following midnight (or between sunset and sunset in Jewish reckoning)
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The time between sunrise and sunset, when it is daylight
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The part of a day spent at work or school
He spent two days at work means that on two days he went to work; he did not spend 48 hours at work.
night
Noun
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Night is the opposite of day. It is the time between sunset and sunrise when the sky is dark.
During the day, we'll go hiking on John Doe Mountain. At night, we'll come back to the hotel and get some sleep.
There was a terrible accident in the night that woke all of us up.
rhythm
Noun
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A rhythm is the part of music that drums do. It's the way music goes in time, without thinking about higher or lower notes.
A healthy heart beats with a steady rhythm.
She followed the rhythm of the music by tapping the floor with her foot.