Englishfor English speakers
commitment
Noun
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A commitment is a formal promise or agreement.
Actually I can't come on Saturday, I have family commitments.
You don't have to make a firm commitment but we would like to know when you can probably start work.
Police management retain their commitment to improving community relations.
Both men have demonstrated their great commitment to Wales over the last nine months.
period
Noun
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A period is a length of time.
There was a short period when my computer stopped working.
During the first period, Germany scored two goals.
The dinosaurs lived from late in the Triassic period (about 225 million years ago) until the end of the Cretaceous (about 65 million years ago).
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A period is the dot that marks the end of most sentences in English. This -> . is a period.
Should I use an exclamation mark or a period at the end of this sentence?
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A woman's period is the time each month when she passes blood.
I have missed two periods now. I think I must be pregnant.
period
Interjection
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And nothing else; and nothing less; used for emphasis.
When I say "eat your dinner," it means "eat your dinner", period!