knave

As nouns the difference between knave and bum

is that knave is (archaic) a boy; especially, a boy servant while bum is the buttocks or bum can be (north america|colloquial) a hobo; a homeless person, usually a man or bum can be (dated) a humming noise or bum can be (obsolete) a bumbailiff.

As a verb bum is

(uk|transitive|colloquial) to sodomize; to engage in anal sex or bum can be (colloquial) to ask someone to give one (something) for free; to beg for something or bum can be to depress; to make unhappy or bum can be to make a murmuring or humming sound.

As an interjection bum is

(label) an expression of annoyance.

As an adjective bum is

of poor quality or highly undesirable .

As nouns the difference between knave and swindler

is that knave is (archaic) a boy; especially, a boy servant while swindler is a person who swindles, cheats or defrauds.

As nouns the difference between clemency and knave

is that clemency is the gentle or kind exercise of power; leniency, mercy; compassion in judging or punishing while knave is (archaic) a boy; especially, a boy servant.

As nouns the difference between imposter and knave

is that imposter is someone who attempts to deceive by using an assumed name or identity or other devious disguise while knave is a boy; especially, a boy servant.

As an adjective foolish

is lacking good sense or judgement; unwise.

As a noun knave is

a boy; especially, a boy servant.

Knave is a related term of rat.

As a noun knave

is (archaic) a boy; especially, a boy servant.

As an adjective rat is

.

As nouns the difference between knave and fool

is that knave is a boy; especially, a boy servant while fool is a person with poor judgment or little intelligence.

As a verb fool is

to trick; to make a fool of someone.

As nouns the difference between blackleg and knave

is that blackleg is fatal cattle disease caused by the soil-borne bacteria Clostridium chauvoei; symptomatic anthrax while knave is a boy; especially, a boy servant.

As an adjective blackleg

is relating to a scab worker.

In lang=en terms the difference between blackguard and knave

is that blackguard is a scoundrel; an unprincipled contemptible person; an untrustworthy person while knave is a playing card marked with the figure of a servant or soldier; a jack.

As a verb blackguard

is to revile or abuse in scurrilous language.

As nouns the difference between knave and cad

is that knave is a boy; especially, a boy servant while cad is a person who stands at the door of an omnibus to open and shut it, and to receive fares; an idle hanger-on about innyards.

As an initialism CAD is

initialism of w:Computer Aided Detection|Computer Aided Drafting|lang=en.

As an abbreviation CAD is

canadian dollar.