Everything which truly exist, exist in the Great Void. Everything that truly exists, takes a portion of space, of the space that contains everything that truly exist, that is, the Great Void.
The Great Void of the Universe is possibly infinite. It is not an entity, but a composition of space, seclusion (my definition of separation) and silence. Location, interaction and sound - their existence depends on the Great Void to contain them, and cannot be contained independently of it. Every location needs space, every interaction needs separation between the interacting objects, and every sound needs to exist under the vocal sound that is silence.
So, yes. Silence is a variation of space, but only on a vocal and auditory level. It is one of the basics which the Great Void is composed of, that everyone and everything inhabits its possibly infinite realm.
Space, seclusion and silence is something many of us are afraid of, because we are the exact opposite; entities that are placed in various locations, that were evolved at various degrees of desire to seek interaction, and that our modern lives have set us to escape from silence.
Basically, our strength as a race, to seek location, interaction and sound, is at the same time a grand weakness, for it is very difficult for us, and sometimes even experienced as threatening - to transcend our nature by experiencing the components of the Great Void; to be and to experience emptiness, seclusion and silence. Many of us are afraid of these components because of our primal nature, that dictates us to constantly seek activeness, togetherness and sound. This is why experiencing the traits of the Great Void of the Universe is something that currently only few of us can do for extended periods of time, without experiencing negative feelings such as boredom, sadness, frustration and so forth.
However, regardless of our constant escapism as dictated by our inferior nature, space, seclusion and silence are things that are omnipresent regardless of what we do. All of the stimulation we depend our life upon by constantly seeking justification and purpose to our lives - most of it is a stimulation caused by a potentially subconscious fear, of the possibility that we may find ourselves without the stimulation we so crave.
This is why what is defined as the “full” life - constant social interactions, the seeking of romantic love, the pursuit after passions in a continuous cycle of desire and suffering - this “full” life is mere escapism from a great human fear, to find ourselves exposed to the Great Void of the Universe without constant stimulation to protect ourselves from. The “full” life, created by conformity and hedonism, is a life that most of it exists not in the World Beyond the Mind, but in our subjective and inter-subjective experience, not in the objective reality, whose existence is independent of any subjective form, and of any purpose. The objective reality can exist without inherit purpose, for many objects which inhabit it, can endure existence for a potentially indefinite period of time, without any reasoning beyond scientific evolution of chronology.
Inanimate, silent objects are the most enduring things in this universe that can endure and exist, without any possibility of being suicidal, because suicidal tendencies are the potential of subjective beings, not inanimate. Therefore, the chair that you’re sitting upon has the potential to endure years after years of existence, even after a potential demise of the human race - and still exist and endure. The said chair does not crave the desire to live, nor it attempts to escape from the universal sovereignty of the Great Void - making the unanimated far more superior and stronger than we subjective beings are.
What am I trying to say is, that to escape from the space, seclusion and silence of the Great Void, by craving purpose, interaction and sound - is a weakness that can be transcended over, by learning the ways of the unanimated and silent, that allows them to endure the Great Void without escapism.
Silence is just one of the components of the Great Void we escape from. The more we are to adjust ourselves to cope with the Great Void, by refusing to escape from it as our primal nature dictates to us, the more we shall increase our independence from our desperation to constantly seek external interaction, and from the unnecessary cycle of desire-and-suffering that may end only when we are to die.
If you wish to become a more autonomous, less suffering individual - seek space, seek seclusion and seek silence, and then you shall crave less and less to escape from the eternity of the Great Void. That process can be defined as the "Metaphorical Undead-ization".