Both each and every are used with a singular noun.
Each is used with an only one object or person.
Every is used with a group of people or object taken as one.
Examples:
Every child is receptive to learning.
Each child learns differently.
When talking about only two objects, use each.
Correct: Amanda wore earrings on each ear.
Incorrect: Amanda wore earrings on every ear.
When the quantifier modifies more than two objects, each and every can be interchanged.
The child got each item on her Christmas wish.
The child got every item on her Christmas wish.
Sometimes, the phrase each and every is used together to emphasize.
The child got each and every item on her Christmas wish.