A Black hole is the densest matter in the universe, and thus is in fact the most opposite thing in the universe to a hole.
Black holes are surfaced by a horizon; which is not a material, but is simply the warping of space and time. If you fall across the horizon, you wouldn't know it; and yet you'd never be able to escape
Black holes are rotational, typically spinning like a planet on an axis at almost the speed of light with larger black holes. A giant blackhole can be spinning at a rate of one revolution every 10 minutes to an hour
A Black hole is an object whose mass and energy is not in the singularity at its center but in the very curving of space and time created when the star that made it exploded.
A black hole is a celestial object whose nothingness generates a sound in the key of B flat
Black holes are an enormous source of energy - 40% of the energy can perhaps be harnessed
A Black hole is inescapable not because you are falling into a space direction, but because you are being pulled into a time direction. Everything is pulled inexorably forward by the forward flow of time.
A black hole's mass and energy is not in the singularity at its center but in the very curving of space and time created when the star that made it exploded
Black holes are not made of matter, but by space and time