impact

Definitions
Examples

(noun): The striking of one body against another; collision.
(noun): The force or energy of a collision of two objects.
(noun): A forced impinging.
(noun): A significant or strong influence; an effect.
(verb): To collide or strike, the act of impinging.
(verb): To compress; to compact; to press into something or pack together.
(verb): To influence; to affect; to have an impact on.
(verb): To stamp or impress onto something.

The hatchet cut the wood on impact.
His spine had an impingement; L4 and L5 made impact, which caused numbness in his leg.
His friend's opinion had an impact on his decision.
When the hammer impacts the nail, it bends.
The footprints of birds do not impact the soil in the way those of dinosaurs do.