The strength of gravity's pull on an object is called its weight.

Here's why:

* Gravity: A force of attraction between any two objects with mass. The more mass an object has, the stronger its gravitational pull.

* Weight: The force of gravity acting on an object's mass. It's measured in units like Newtons (N).

So, while we often use "weight" interchangeably with "mass," it's important to remember that weight is actually the force of gravity acting on that mass.