Question

Can we call gravity as dark matter or vice versa?

Answer 1

No.Dark matter is a hypothetical form of matter that is thought to account for approximately 80% of the matter in the universe.It is not gravity.Gravity cannot be taken as dark mateer or viceversa.
Unlike normal matter, dark matter does not interact with the electromagnetic force. This means it does not absorb, reflect or emit light, making it extremely hard to spot. In fact, researchers have been able to infer the existence of dark matter only from the gravitational effect it seems to have on visible matter.A new dark matter theory proposes dark matter was produced by interactions between gravitational waves and quarks in the early universe.
So its just that some theories of gravity are used by researchers to explain more about dark matter and they say that there's some relation between both.But we cannot call gravity as dark matter or vice versa.