The words, ‘Each’ and ‘every’ are ‘used with singular nouns to indicate quantity’. There are differences between the two that are important to grasp for usage, though. ‘Each’ is used when there are two objects, here ‘every’ is not used. ‘Every’ is used to refer to repeated, regular events.
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Each
:
used when there are two objects.
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Every
:
used to refer to repeated, regular events.
Examples with 'each'
John knew every detail of his daily routine.
Nearly every fruit on the cart was spoilt.
Examples with 'every'
Mr. Jack get a health check-up done every three months.
Rahul had to take a drink break after every sesson.