unsporting vs cheating

unsporting is not a noun while cheating is a noun.

Word	Noun	Adjective	Verb	Adverb
unsporting	No	Yes	No	No
cheating	Yes	Yes	No	No

As adjectives, unsporting and cheating are synonyms defined as:

Other synonyms of unsporting include dirty, foul, unsportsmanlike.

unsporting (noun)	cheating (noun)
	a deception for profit to yourself

unsporting (adjective)	cheating (adjective)
violating accepted standards or rules	violating accepted standards or rules
	not faithful to a spouse or lover