The voices in your head that tell you to do things.

Scary sounds that people hear in their heads when they don't have any friends.

Something people say to get kicked out of walmart

Something people say when they don't want to talk to you.

Something people say when they want to see a therapist.

Communicating by phone. More intimate than texting but less so than speaking in person, or "face to face."

You have a voice when you breathe out and your vocal chords vibrate, producing sound, and eventually speech. People have different tones of voice. With a voice you can sing, speak, yell, whine, or hum.

the sounds a person can make

A voice channel in a VOIP application such as Discord, Teamspeak etc.

A term that Alan Rickman fans use to refer to him. Rickman, known most famously for his role as Professor Snape in the Harry Potter movies, posesses a voice that has been described variously as: melancholy, seductive, disdainful, languid, honeyed, and velvet baritone.
This nickname is also reinforced by Rickman having played the role of Metatron in the movie "Dogma". Metatron was known as "The Voice of God."