bend vs twist

bend and twist both are nouns.

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

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

bend: an angular or rounded shape made by folding
twist: a sharp bend in a line produced when a line having a loop is pulled tight

Other hyponyms of bend include plait, pleat, kink, twirl, pucker, ruck, accordion fold, concertina fold, z-fold, zig-zag fold.

As nouns, bend and twist are synonyms defined as:

Other synonyms of bend include crook, turn.

As verbs, bend and twist are synonyms defined as:

Other synonyms of bend include deform, flex, turn.

bend (noun)	twist (noun)
curved segment (of a road or river or railroad track etc.)	social dancing in which couples vigorously twist their hips and arms in time to the music; was popular in the 1960s
diagonal line traversing a shield from the upper right corner to the lower left	any clever maneuver
movement that causes the formation of a curve	the act of rotating rapidly
an angular or rounded shape made by folding	turning or twisting around (in place)
a circular segment of a curve	the act of winding or twisting
	a hairdo formed by braiding or twisting the hair
	an interpretation of a text or action
	an unforeseen development
	a miniature whirlpool or whirlwind resulting when the current of a fluid doubles back on itself
	a jerky pulling movement
	a sharp bend in a line produced when a line having a loop is pulled tight
	a circular segment of a curve
	a sharp strain on muscles or ligaments

bend (verb)	twist (verb)
cause (an object) to assume a crooked or angular form	twist suddenly so as to sprain
bend a joint	form into twists
form a curve	practice sophistry; change the meaning of or be vague about in order to mislead or deceive
change direction	turn in the opposite direction
turn from a straight course, fixed direction, or line of interest	form into a spiral shape
bend one's back forward from the waist on down	cause (an object) to assume a crooked or angular form
	twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates
	to move in a twisting or contorted motion, (especially when struggling)
	do the twist
	extend in curves and turns