fairness vs impartiality

fairness and impartiality both are nouns.

Word	Noun	Adjective	Verb	Adverb
fairness	Yes	No	No	No
impartiality	Yes	No	No	No

As nouns, impartiality is a hypernym of fairness; that is, impartiality is a word with a broader meaning than fairness:

Other hypernyms of fairness include nonpartisanship.

fairness (noun)	impartiality (noun)
conformity with rules or standards	an inclination to weigh both views or opinions equally
the property of having a naturally light complexion
the quality of being good looking and attractive
ability to make judgments free from discrimination or dishonesty