sandbagger vs cheater

sandbagger and cheater both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandbagger	Yes	No	No	No
cheater	Yes	No	No	No

As nouns, cheater is a hypernym of sandbagger; that is, cheater is a word with a broader meaning than sandbagger:

sandbagger: someone who deceives you about his true nature or intent in order to take advantage of you
cheater: someone who leads you to believe something that is not true

Other hypernyms of sandbagger include beguiler, cheat, deceiver, slicker, trickster.

sandbagger (noun)	cheater (noun)
someone who deceives you about his true nature or intent in order to take advantage of you	someone who leads you to believe something that is not true