nevertheless vs yet

nevertheless and yet both are adverbs.

Word	Noun	Adjective	Verb	Adverb
nevertheless	No	No	No	Yes
yet	No	No	No	Yes

As adverbs, nevertheless and yet are synonyms defined as:

nevertheless and yet: despite anything to the contrary (usually preceding a concession)

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

nevertheless (adverb)	yet (adverb)
despite anything to the contrary (usually preceding a concession)	within an indefinite time or at an unspecified future time
	up to the present time
	to a greater degree or extent; used with comparisons
	used in negative statement to describe a situation that has existed up to this point or up to the present time
	used after a superlative
	despite anything to the contrary (usually preceding a concession)