false name vs alias

false name and alias both are nouns.

Word	Noun	Adjective	Verb	Adverb
false name	Yes	No	No	No
alias	Yes	No	No	Yes

As nouns, false name and alias are synonyms defined as:

Other synonyms of false name include assumed name.

false name (noun)	alias (noun)
a name that has been assumed	a name that has been assumed

false name (adverb)	alias (adverb)
	as known or named at another time or place