pulsars
A Pulsar. See related question
Neutron stars. A neutron star pulses, however if that pulse is detected on Earth it is called a pulsar, even though they are the same thing. See related questions.
Stars do not create supernovas. Supernovas happen to stars. A supernova is when a star, bigger than our own sun, explodes due to the lack of gas they need.
Supernovas are the explosions of large stars in space.
These stars are formed preponderant by neutrons.
Because when they are newly formed, they are very hot.
black holes and neutron stars
binary stars are two stars that orbit each other while supernovas and novas stars are stars that explode when it runs out of fuel
Neutron stars are formed when stars with more than 8 times the mass of the Sun run out of fuel and explodes as a supernova. After the star explodes, the core of the star remains, the core would then become a neutron star or a black hole. If the core remain is less than 3 times the mass of the sun, it would become a neutron star.
Only in that they where formed by the same process. A neutron star formed from a star with less mass than a black hole
No. Supernovas are cataclysmic eruptions from massive stars that have come to the end of their lives. See related questions
Stars may collapse to such a degree, perhaps after a supernova, that, in the core, electrons are squashed into the nucleus, reacting with protons to form neutrons. A star of this collapsed state is called neutron stars.