knavery vs charlatanism

knavery and charlatanism both are nouns.

Word	Noun	Adjective	Verb	Adverb
knavery	Yes	No	No	No
charlatanism	Yes	No	No	No

As nouns, charlatanism is a hyponym of knavery; that is, charlatanism is a word with a more specific, narrower meaning than knavery:

Other hyponyms of knavery include betrayal, perfidy, treachery, treason, quackery, trick, falsehood, falsification.

knavery (noun)	charlatanism (noun)
lack of honesty; acts of lying or cheating or stealing	the dishonesty of a charlatan