faith vs Christian

faith and Christian both are nouns.

Word	Noun	Adjective	Verb	Adverb
faith	Yes	No	No	No
Christian	Yes	Yes	No	No

faith (noun)	Christian (noun)
loyalty or allegiance to a cause or a person	a religious person who believes Jesus is the Christ and who is a member of a Christian denomination
a strong belief in a supernatural power or powers that control human destiny
complete confidence in a person or plan etc
an institution to express belief in a divine power

faith (adjective)	Christian (adjective)
	relating to or characteristic of Christianity