gamesmanship vs unfairness

gamesmanship and unfairness both are nouns.

Word	Noun	Adjective	Verb	Adverb
gamesmanship	Yes	No	No	No
unfairness	Yes	No	No	No

As nouns, unfairness is a hypernym of gamesmanship; that is, unfairness is a word with a broader meaning than gamesmanship:

gamesmanship: the use of dubious (although not technically illegal) methods to win a game
unfairness: injustice by virtue of not conforming with rules or standards

Other hypernyms of gamesmanship include inequity.

gamesmanship (noun)	unfairness (noun)
the use of dubious (although not technically illegal) methods to win a game	an unjust act
	injustice by virtue of not conforming with rules or standards
	partiality that is not fair or equitable