cognate vs kin

cognate and kin both are nouns.

Word	Noun	Adjective	Verb	Adverb
cognate	Yes	Yes	No	No
kin	Yes	Yes	No	No

As adjectives, cognate and kin are synonyms defined as:

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

cognate (noun)	kin (noun)
a word is cognate with another if both derive from the same word in an ancestral language	group of people related by blood or marriage
one related by blood or origin; especially on sharing an ancestor with another	a person having kinship with another or others

cognate (adjective)	kin (adjective)
related by blood	related by blood
having the same ancestral language
related in nature