crook vs bend

crook and bend both are nouns.

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

As nouns, crook and bend are synonyms defined as:

Other synonyms of crook include turn, twist.

As verbs, bend is a hypernym of crook; that is, bend is a word with a broader meaning than crook:

Other hypernyms of crook include flex.

crook (noun)	bend (noun)
a long staff with one end being hook shaped	curved segment (of a road or river or railroad track etc.)
someone who has committed a crime or has been legally convicted of a crime	diagonal line traversing a shield from the upper right corner to the lower left
a circular segment of a curve	movement that causes the formation of a curve
	an angular or rounded shape made by folding
	a circular segment of a curve

crook (verb)	bend (verb)
bend or cause to bend	cause (an object) to assume a crooked or angular form
	bend a joint
	form a curve
	change direction
	turn from a straight course, fixed direction, or line of interest
	bend one's back forward from the waist on down