virtually vs virtual

virtually is not an adjective while virtual is an adjective.

Word	Noun	Adjective	Verb	Adverb
virtually	No	No	No	Yes
virtual	No	Yes	No	No

virtually (adjective)	virtual (adjective)
	existing in essence or effect though not in actual fact
	being actually such in almost every respect

virtually (adverb)	virtual (adverb)
in essence or effect but not in fact
(of actions or states) slightly short of or not quite accomplished; all but