Boron nitride (BN) is a compound of the same number of
nitrogen atoms and boron atoms, so its chemical formula is BN.
Boron nitride and carbon are polymorphic structures: one of
which is similar to diamond and the other one is similar to graphite.
The structure similar to the diamond body is now known as
the material whose hardness next to the diamond. The other
structure similar to the graphite body is a very practical lubricant