They All Use BLADES

Verb cut off a limb, typically by surgical operation
amputate
Mountain climber Aron Ralston is trapped in an isolated canyon. Over the next five days, he examines his life and ends up amputating his own arm to free himself from the fallen boulder.
Noun the flat cutting edge or flight wide section of a tool or other piece of equipment
blade
A re-imagining of the sinister Freddy Krueger, a serial-killer who wields a glove with four blades embedded in the fingers and kills people in their dreams.
Noun machine that cuts crops (e.g. corn, wheat) separating the seeds from the rest of the plant
Through pictures you can enjoy the sight of the golden wheat in its natural environment as it sways and dances in the wind awaiting to be harvested by the massive combines.
Noun pilotless aircraft operated by remote control
drone
The founder of Amazon is thinking outside the box — way outside. On “60 Minutes,” Mr. Bezos floated the idea of using drones to deliver packages, showing a video of a tiny helicopter airlifting a package to a house.
Noun machine that converts one form of energy into another
The dams create strong water flows which move turbine blades that turn the rotor of an electric generator. When the coils of wire on the rotor sweep past the generator’s stationary coil, electricity is produced.
Adjective holding or using a knife
The Walkabout Creek Hotel in McKinlay, Queensland is now for sale. It's the favorite watering hole of the knife-wielding movie hero Mick "Crocodile" Dundee.
Verb move through the water in a boat using a short pole with a broad blade at one or both ends
paddle
As the athletes glide across the water, a swarm of coaches follows alongside on a parallel concrete path, pedaling as their charges paddle, with only a thin strip of grass separating them.
Noun a set of blades, arranged like a fan at the end of a stick, that spin in the wind
pinwheel
I have always been fascinated by the pinwheel. Just looking at it spin in the wind makes me happy. They are really inexpensive to craft, and would spice up any room or party space.
Noun mental, emotional, or physical hardship or tension
Olympic ice dancers must maintain a stoic smile before an audience and a panel of judges, even as their bodies and brains are undergoing Olympic-level stress. Some skaters joke that it's the hardest part of the sport!
Noun an area of land with a group of energy-producing windmills or wind turbines
wind farm
Google is making a huge investment in a massive off-shore cable that would eventually carry power from off-shore wind farms to cities along the Atlantic seaboard.