faithfully vs faithful

faithfully is not a noun while faithful is a noun.

Word	Noun	Adjective	Verb	Adverb
faithfully	No	No	No	Yes
faithful	Yes	Yes	No	No

faithfully (noun)	faithful (noun)
	a group of people who adhere to a common faith and habitually attend a given church
	any loyal and steadfast following

faithfully (adjective)	faithful (adjective)
	steadfast in affection or allegiance
	not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend
	marked by fidelity to an original

faithfully (adverb)	faithful (adverb)
in a faithful manner