Englishfor English speakers
peace
Noun
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Peace is the way a country is when there is no war.
The people lived in peace for thirty years.
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Peace is when there is silence or quiet. There is no noise and nothing happening suddenly.
Will you please go away and leave me in peace?
one
Determinative
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(ordinal first) The number 1.
We have one nose and one mouth.
one
Noun
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The number 1.
One is the smallest whole number.
one
Pronoun
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One is a singular pronoun which means "someone" or "people". It is used more often in formal writing.
It is easy to see the difference if one looks closely enough.
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.