different between twisting vs contortionist

English

twisting

twisting (countable and uncountable, plural twistings)

(countable) gerund of twist
- 1984, Theodore R. Sizer, Horace's Compromise: The Dilemma of the American High School
  She was oblivious of all around her, and her facial twistings and scrunchings were droll.
(uncountable) The disreputable practice of selling unnecessary insurance to a customer in order to earn commission.
- 1985, The Federal Reporter (second series, volume 756, page 219):
  Twisting benefits an insurance agent while damaging the customer. The agent benefits because the commission earned on the sale of a new health insurance policy is substantially higher than that earned on the renewal of an existing policy.

twisting

Having many twists
The mountain road is even more twisting than the valley road.

From contortion +? -ist.

contortionist (plural contortionists)

Send