What's the difference between pilliwinks and thumbscrew?

Pilliwinks

Definition:

Example Sentences:

Definition:

(n.) A screw having a flat-sided or knurled head, so that it may be turned by the thumb and forefinger.
(n.) An old instrument of torture for compressing the thumb by a screw; a thumbkin.

Example Sentences:

(1) Defiantly, Gentileschi told him her thumbscrews were the wedding ring he’d promised.
(2) As had already been the case after the military coups in Brazil in 1964 and then in Uruguay, Paraguay, Bolivia and Argentina, and as was to be the case latterly in modern Iraq, Afghanistan and Guantánamo Bay, the military and police torturers were ready with their electrodes, thumbscrews and waterboarding equipment to defend "western Christian civilisation".
(3) The dispute has also dragged in JK Rowling and the best-selling American writer James Patterson, and broke into the open on Friday , when the world's largest bookseller started turning the thumbscrew on the French-owned publisher.
(4) A sliding beak-like marker, which can be anchored with a thumbscrew, is used to identify landmarks and to measure the amount of subluxation.
(5) But the fact that an unaccountable billionaire has been able to weaponize his wealth, in absolute secrecy, to game the American legal system using puppet claimants to turn thumbscrews on reporters and media companies – do so repeatedly, backing suit after suit: that is something which should terrify us all.