Collocations for gravity - noun

low, weak, zero
the weak gravity on the moon

strong

defy
The building leans so much that it seems to defy gravity.

pull sth
Gravity pulls objects together.

bend sth
Gravity bends light like a lens.

by gravity
The water flows from the tank by gravity to the houses below.

centre/center of gravity (often figurative)
a low centre/center of gravity
The world's economic centre/center of gravity is shifting east.

the force of gravity
the law of gravity, the laws of gravity

extreme
I don't think you realize the extreme gravity of the situation.

appreciate, realize, understand

with gravity
The threat is not being treated with the gravity it deserves.