1) We use 'each' to refer to individual things in a group or a list of two or more things. If you want to emphasize the individual, use 'each'.

The last two slices of pizza → each slice.

2) We use 'every' to refer to a group or list of three or more things. 'Every' refers to the collective whole, not just the individuals.

Doctors, in general → every doctor.

3) 'Every' is also used to indicate how often something occurs.

The train stops every 30 minutes to let passengers off. - Потяг зупиняється кожні 30 хвилин, щоб висадити пасажирів.

4) We can use 'each' alone (without a noun), but not 'every':

There were four rooms, each with wonderful views of the garden. - Було чотири кімнати, з кожної відкривався чудовий вид на сад.

5) We can use 'each of + pronoun' or 'each of + determiner + noun', but with 'every' we must use 'every one + pronoun' or 'every one + determiner + noun':

Each of the children received a special gift. - Кожна дитина отримала особливий подарунок.

Every one of the children received a special gift. - Кожна дитина отримала особливий подарунок.

6) We use adverbs such as almost, practically and nearly with 'every', but not with 'each':

Almost every car in the car park was new. - Майже кожна машина в автопарку була нова.

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