family vs familial

family is a noun but familial is not a noun.

Word	Noun	Adjective	Verb	Adverb
family	Yes	No	No	No
familial	No	Yes	No	No

family (noun)	familial (noun)
primary social group; parents and children
people descended from a common ancestor
a social unit living together
(biology) a taxonomic group containing one or more genera
a collection of things sharing a common attribute
an association of people who share common beliefs or activities
a loose affiliation of gangsters in charge of organized criminal activities
a person having kinship with another or others

family (adjective)	familial (adjective)
	relating to or having the characteristics of a family
	occurring among members of a family usually by heredity