Unfairness
Part of speech: noun
Definition: The state of being unfair A lack of justice An unjust act
Example sentence: Trump has predicated his whole campaign on the unfairness of the playing field. Big corporations, rich donors, big media, and trade deals that punish the little guy.
Inequity
Part of speech: noun
Definition: A lack of justice; injusticeAn unjust act; A disservice
Example sentence: All the definitions people want to put on you in terms of what kind of writer you are come with hidden meanings. If you're writing science fiction, you're writing rocket ships. If you write dystopian fiction, it's inequity where The Man must be fought.