The difference between All and Each
When used as determiners, all means every individual or anything of the given class, with no exceptions (the noun or noun phrase denoting the class must be plural or uncountable), whereas each means all.
When used as nouns, all means everything that one is capable of, whereas each means an individual item: the least quantitative unit in a grouping.
All is also pronoun with the meaning: everything.
All is also conjunction with the meaning: although.
All is also adverb with the meaning: ..
All is also adjective with the meaning: all gone.
check bellow for the other definitions of All and Each
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All as a pronoun:
Everything.
Examples:
"some gave all they had;  she knows all and sees all;  Those who think they know it all are annoying to those of us who do."
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All as a pronoun:
Everyone.
Examples:
"A good time was had by all."
"We all enjoyed the movie."
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All as a pronoun (Southern US, South Midland US, Midland US, Scotland, Northern Ireland):
, , , and similar words, either without changing their meaning, or indicating that one expects that they cover more than one element, e.g. that is more than one person.}}
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All as an adverb (degree):
.
Examples:
"It suddenly went all quiet."
"She was all, “Whatever.”"
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All as an adverb (poetic):
Entirely.
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All as an adverb:
Apiece; each.
Examples:
"The score was 30 all when the rain delay started."
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All as an adverb (degree):
So much.
Examples:
"Don't want to go? All the better since I lost the tickets."
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All as an adverb (obsolete, poetic):
Even; just.
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All as a noun (with a possessive pronoun):
Everything that one is capable of.
Examples:
"She gave her all, and collapsed at the finish line."
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All as a noun (countable):
The totality of one's possessions.
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All as an adjective (Pennsylvania, dialect):
All gone; dead.
Examples:
"The butter is all."
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Each as a noun (operations, philosophy):
An individual item: the least quantitative unit in a grouping.