crook vs felon

crook and felon both are nouns.

Word	Noun	Adjective	Verb	Adverb
crook	Yes	No	Yes	No
felon	Yes	No	No	No

As nouns, crook and felon are synonyms defined as:

crook and felon: someone who has committed a crime or has been legally convicted of a crime

Other synonyms of crook include criminal, malefactor, outlaw.

crook (noun)	felon (noun)
a long staff with one end being hook shaped	someone who has committed a crime or has been legally convicted of a crime
someone who has committed a crime or has been legally convicted of a crime	a purulent infection at the end of a finger or toe in the area surrounding the nail
a circular segment of a curve

crook (verb)	felon (verb)
bend or cause to bend