It is called a guillotine
It is called the Guillotine Sword, Executioner Blade, or Decapitating Carving Knife.
A power saw and a shaving machine are some of the things with a blade.
William Blade
the guillotine works by decapitating an individual using a very sharp blade, dropped from approx. 8 feet. above the intended victim. gravity brings the blade down severing the head thus rendering instant death. The person normally got a reasonable last request.
The blade on a RIFLE is called a bayonet.
Fire and Ice The "Iron Lotus", an extremely complicated maneuver that Robert developed years ago. However, it is also dangerous: the only attempt of the maneuver was in North Korea and resulted in the man decapitating the woman with his skate blade.
Razer Blade is a laptop... as for a blade blade I have no I dead... Though if you're thinking of things for children then you may be thinking of a "Bey Blade," which is a kids TV show where to 'spin-top' like things battle. Than you may also mean a Razor... which is a scooter... Or I've gone on a tangent :)
There are three types of fencing swords each with different rules : Foil, Eppe and Sabre. The blade of a foil is called a "Foil blade"The blade of an eppe is called an "Eppe Blade"Etc
The edge of the blade should be called as edge of the blade. But in practice the cutting edge is probably called as margin of the blade. The expert in English language should explain better.
I think you're talking about Peahats.
It is called the rotor.
The ridge on the dorsal surface of the shoulder blade is called the spine.