to begin with vs originally

to begin with and originally both are adverbs.

Word	Noun	Adjective	Verb	Adverb
to begin with	No	No	No	Yes
originally	No	No	No	Yes

As adverbs, to begin with and originally are synonyms defined as:

Other synonyms of to begin with include earlier, in the beginning, in the first place.

to begin with (adverb)	originally (adverb)
before now	in an manner suggesting originality
	with reference to the origin or beginning
	before now