knave vs rogue

knave and rogue both are nouns.

Word	Noun	Adjective	Verb	Adverb
knave	Yes	No	No	No
rogue	Yes	No	No	No

As nouns, knave and rogue are synonyms defined as:

Other synonyms of knave include rapscallion, rascal, scalawag, scallywag, varlet.

knave (noun)	rogue (noun)
one of four face cards in a deck bearing a picture of a young prince	a deceitful and unreliable scoundrel
a deceitful and unreliable scoundrel