Is a Pulsar a different star than neutron star.???

Well A binary system containing two neutron stars orbiting each other is
interesting. This system called PSR 1913+16 (PSR must stand for pulsar)
Do they revolve around each other like a balanced "dumb bell?" If they
are close together,and have such a great mutual gravity force,than how
long can they stay apart? Is their EM pulse close to their axis of
spin.or at their equators? Its a small system,and how far away are they
from us? These type pulsars can't be very common. Bert