mountebank vs cheater

mountebank and cheater both are nouns.

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

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

mountebank: a flamboyant deceiver; one who attracts customers with tricks or jokes
cheater: someone who leads you to believe something that is not true

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

mountebank (noun)	cheater (noun)
a flamboyant deceiver; one who attracts customers with tricks or jokes	someone who leads you to believe something that is not true