alright vs very well

alright is an adjective but very well is not an adjective.

Word	Noun	Adjective	Verb	Adverb
alright	No	Yes	No	Yes
very well	No	No	No	Yes

As adverbs, alright and very well are synonyms defined as:

alright and very well: an expression of agreement normally occurring at the beginning of a sentence

Other synonyms of alright include all right, fine, OK.

alright (adjective)	very well (adjective)
nonstandard usage

alright (adverb)	very well (adverb)
an expression of agreement normally occurring at the beginning of a sentence	quite well
without doubt (used to reinforce an assertion)	an expression of agreement normally occurring at the beginning of a sentence
in a satisfactory or adequate manner