twist vs bend

twist and bend both are nouns.

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

As nouns, bend is a hypernym of twist; that is, bend is a word with a broader meaning than twist:

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

Other hypernyms of twist include crease, crimp, flexure, fold, plication.

As nouns, twist and bend are synonyms defined as:

Other synonyms of twist include crook, turn.

As verbs, twist and bend are synonyms defined as:

Other synonyms of twist include deform, flex, turn.

twist (noun)	bend (noun)
social dancing in which couples vigorously twist their hips and arms in time to the music; was popular in the 1960s	curved segment (of a road or river or railroad track etc.)
any clever maneuver	diagonal line traversing a shield from the upper right corner to the lower left
the act of rotating rapidly	movement that causes the formation of a curve
turning or twisting around (in place)	an angular or rounded shape made by folding
the act of winding or twisting	a circular segment of a curve
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

twist (verb)	bend (verb)
twist suddenly so as to sprain	cause (an object) to assume a crooked or angular form
form into twists	bend a joint
practice sophistry; change the meaning of or be vague about in order to mislead or deceive	form a curve
turn in the opposite direction	change direction
form into a spiral shape	turn from a straight course, fixed direction, or line of interest
cause (an object) to assume a crooked or angular form	bend one's back forward from the waist on down
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