akin vs cognate

akin is not a noun while cognate is a noun.

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

As adjectives, akin and cognate are synonyms defined as:

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

akin (noun)	cognate (noun)
	a word is cognate with another if both derive from the same word in an ancestral language
	one related by blood or origin; especially on sharing an ancestor with another

akin (adjective)	cognate (adjective)
related by blood	related by blood
similar in quality or character	having the same ancestral language
	related in nature