Difference between Knuckle Duster and Knuckles

KNUCKLE DUSTER vs KNUCKLES: NOUN

A weapon made of metal worn around the knuckles that strengthens the impact of a punch; brass knuckles.
A small metal weapon; worn over the knuckles on the back of the hand

Bowie knife, Broom handle, Adjustable spanner, Kukri, Switchblade, Truncheon, Crowbar, Claw hammer, Lug wrench, Cavalry sword, Penknife, Knuckles, Knucks, Brass knucks, Brass knuckles

Chin, Forehead, Articulations, Lashings, Brass, Digits, Fingertips, Joints, Pinkies, Toes, Fingers, Brass knuckles, Brass knucks, Knuckle duster, Knucks

Steak knife, Pickaxe, Mallet, Screwdriver, Sword, Bowie knife, Broom handle, Adjustable spanner, Kukri, Switchblade, Truncheon, Lug wrench, Cavalry sword, Penknife, Brass knucks

Rumps, Ass, Clonk, Butt, Shins, Elbows, Chin, Forehead, Lashings, Brass, Digits, Toes, Fingers, Brass knucks, Knuckle duster

The engravings of a gun and roses under the Knuckle Duster is a reference to the American rock band.
Ric Flair and Lacey Evans came out to interfere, and The Nature Boy gave Evans a knuckle duster.
Among the weapons handed in at stations are two swords, two machetes and a knuckle duster.

They beat mainly with hands and brass knuckles.
He moved his knuckles along the silken slope.
Ali rapped on the windowpane with his knuckles.
There were scrapes and bruising on the knuckles.
Sonic and Knuckles will glide lower if correctly.
Using the brass knuckles to injure another person is a criminal act and one cannot carry brass knuckles in schools or hospitals.
Those knuckles how could I have passed those knuckles?
Knuckles is rather put off by his new baby brother, for several reasons: his horrible name (Knuckles and Kneecaps?).
Several nations only prohibit metallic knuckles while others ban any hardening knuckles.
Thanos Knuckles invaded VRCHAT, thus began the UGANDAN KNUCKLES INFINITY WAR!