by artificial means vs artificially

by artificial means and artificially both are adverbs.

Word	Noun	Adjective	Verb	Adverb
by artificial means	No	No	No	Yes
artificially	No	No	No	Yes

As adverbs, by artificial means and artificially are synonyms defined as:

by artificial means and artificially: not according to nature; not by natural means

Other synonyms of by artificial means include unnaturally.

by artificial means (adverb)	artificially (adverb)
not according to nature; not by natural means	not according to nature; not by natural means