for each one vs to each one

for each one and to each one both are adverbs.

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

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

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

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

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