Englishfor English speakers
mystery
Noun
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A mystery is a secret or hidden matter which can't be explained.
She never told me where the money was, and it remains a mystery to me even now.
She and her mystery man were seen outside her parents' home.
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A mystery is a story about a puzzling event: short for mystery story.
The police investigation has failed to solve the murder mystery.
religion
Noun
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Religion is when a person or persons believe in a God or Gods.
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Religion is a set of beliefs about a God or Gods.
His religion is Christianity. Mine is Buddhism