sneakiness vs stealthiness

sneakiness and stealthiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sneakiness	Yes	No	No	No
stealthiness	Yes	No	No	No

As nouns, sneakiness and stealthiness are synonyms defined as:

sneakiness and stealthiness: a disposition to be sly and stealthy and to do things surreptitiously

Other synonyms of sneakiness include furtiveness.

sneakiness (noun)	stealthiness (noun)
a disposition to be sly and stealthy and to do things surreptitiously	a disposition to be sly and stealthy and to do things surreptitiously