essentially vs fundamentally

essentially and fundamentally both are adverbs.

Word	Noun	Adjective	Verb	Adverb
essentially	No	No	No	Yes
fundamentally	No	No	No	Yes

As adverbs, essentially and fundamentally are synonyms defined as:

essentially and fundamentally: in essence; at bottom or by one's (or its) very nature

Other synonyms of essentially include basically.

essentially (adverb)	fundamentally (adverb)
in essence; at bottom or by one's (or its) very nature	in essence; at bottom or by one's (or its) very nature