Question

How does the region different from a neutron star?

Answer 1

For many years astronomers are puzzled by a niche that lies between the mass of star s and black holes: The heaviest known neutron star is not any quite 2.5 times the mass of our sun – or 2.5 “solar masses” – and therefore the lightest known region is about 5 solar masses.

Complete answer:

Black Holes	Neutron Star
When the foremost massive stars die, they collapse under their own gravity and leave behind black holes;	When stars are a touch less massive than this die, they explode and leave behind dense, dead remnants of stars called neutron stars.
For decades, astronomers have been puzzled by a niche in mass that lies between star s and black holes: the heaviest known neutron star is quite 2.5 times the mass of our sun, or 2.5 solar masses.	For decades, astronomers have been puzzled by a niche in mass that lies between neutron stars and regions: and therefore the lightest known black hole is about 5 solar masses.
White dwarfs are only very compact. With even more mass, you get a region, black hole.	In a neutron star , the force of gravity is robust enough to press the protons and electrons together to make neutrons..
The gravitational pull becomes infinite at the event horizon (from a particular point of view),	Neutron stars have very strong, but not an infinitely strong pull therefore the gravitational pull of a region is bigger than a star .

Note:
One unusual discovery was that, in dense clusters, a region and a star could merge without generating any detectable light, although the merger would still generate an unprecedented number of gravitational waves.