akin vs blood-related

akin and blood-related both are adjectives.

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

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

Other synonyms of akin include cognate, consanguine, consanguineal, consanguineous, kin.

akin (adjective)	blood-related (adjective)
related by blood	related by blood
similar in quality or character