notwithstanding vs all the same

notwithstanding and all the same both are adverbs.

Word	Noun	Adjective	Verb	Adverb
notwithstanding	No	No	No	Yes
all the same	No	No	No	Yes

As adverbs, notwithstanding and all the same are synonyms defined as:

notwithstanding and all the same: despite anything to the contrary (usually preceding a concession)

Other synonyms of notwithstanding include at the same time, even so, however, nevertheless, nonetheless, still, withal, yet.

notwithstanding (adverb)	all the same (adverb)
despite anything to the contrary (usually preceding a concession)	despite anything to the contrary (usually preceding a concession)