affine vs kin

affine and kin both are nouns.

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

As nouns, kin is a hypernym of affine; that is, kin is a word with a broader meaning than affine:

Other hypernyms of affine include family, kinsperson.

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

affine (adjective)	kin (adjective)
(mathematics) of or pertaining to the geometry of affine transformations	related by blood
(anthropology) related by marriage