blood-related vs kin

blood-related is not a noun while kin is a noun.

Word	Noun	Adjective	Verb	Adverb
blood-related	No	Yes	No	No
kin	Yes	Yes	No	No

As adjectives, blood-related and kin are synonyms defined as:

Other synonyms of blood-related include akin, cognate, consanguine, consanguineal, consanguineous.

blood-related (noun)	kin (noun)
	group of people related by blood or marriage
	a person having kinship with another or others

blood-related (adjective)	kin (adjective)
related by blood	related by blood