primitively vs in the beginning

primitively and in the beginning both are adverbs.

Word	Noun	Adjective	Verb	Adverb
primitively	No	No	No	Yes
in the beginning	No	No	No	Yes

As adverbs, primitively and in the beginning are synonyms defined as:

primitively and in the beginning: with reference to the origin or beginning

Other synonyms of primitively include originally.

primitively (adverb)	in the beginning (adverb)
in a primitive style or manner	with reference to the origin or beginning
with reference to the origin or beginning	before now