General Silence:
* Silence
* Quiet
* Hush
* Stillness
* Soundlessness
* Peace (when silence is associated with tranquility)
* Tranquility
* Serene (when silence is associated with calm and beauty)
Specific Types of Silence:
* Solitude (silence experienced alone)
* Seclusion (silence experienced in a remote or isolated place)
* Quietude (a state of deep calm and silence)
* Repose (silence associated with rest and relaxation)
* Abeyance (silence as a temporary pause or suspension)
* Vacancy (silence as an empty space, often referring to a lack of sound)
Figurative Silence:
* Void (silence as an absence of meaning or substance)
* Vacuum (silence as a complete absence of anything)
* Dead air (silence in a communication setting, often awkward)
More creative options:
* Soundless embrace
* Whispering stillness
* Silent sanctuary
The best noun for silence depends on the context and the specific meaning you want to convey.