for each one vs each

for each one is not an adjective while each is an adjective.

Word	Noun	Adjective	Verb	Adverb
for each one	No	No	No	Yes
each	No	Yes	No	Yes

As adverbs, for each one and each are synonyms defined as:

for each one and each: to or from every one of two or more (considered individually)

Other synonyms of for each one include apiece, from each one, to each one.

for each one (adjective)	each (adjective)
	(used of count nouns) every one considered individually; quantifier, singular, universal pronoun; quantifier, singular, universal

for each one (adverb)	each (adverb)
to or from every one of two or more (considered individually)	to or from every one of two or more (considered individually)