Characteristics                     or   

                 Attribute 

Loudness isn't noise.

Although we tend to associate

Loud sounds to noise,

They are not the same thing.

The way I see it
Noise can differ from place to place

It is a term

associated with 

discomfort.

Classical music played,

Even though is beautifully produced and composed

During an exam

It can be understood

As noise

Whereas
Kurt cobain's grungy GUITAR SOLOS at crowded arenas is not.

Solos which ressamble in a way
Marco Fusinato's performance
Exploring the essence of noise:
FREE

So noise

Isn't a permanent characteristics of a sound.

But instead,
It's something we attribute,
Due to a situation.

Noise is context.

Here is an example of this:

Song: Patience - Guns and Roses