Each and every have similar but not always identical meanings.
Each = every one separately
Sometimes, each and every have the same meaning:
But often they are not exactly the same.
Each expresses the idea of 'one by one'. It emphasizes individuality.
Every is half-way between each and all. It sees things or people as singular, but in a group or in general.
Consider the following:
Each can be used in front of the verb:
Each can be followed by 'of':
Every cannot be used for 2 things. For 2 things, each can be used:
Every is used to say how often something happens:
Verbs with each and every are always conjugated in the singular.