Bandwidth vs frequency bandwidth in a network

[atrus_ovis]

I can't translate it 100% correctly, but my course notes describe two different properties of a medium:
Literal translation:

"The band width." - ?

"The band width of frequencies" - as the difference of fmax and fmin

What does each exactly refer to, and what's its name in english?

Wikipedia is unhelpful and confusing.

 

[Rogerio]

Take a look at http://en.wikipedia.org/wiki/Bandwidth_(signal_processing)"

 

[atrus_ovis]

Wikipedia is unhelpful and confusing.

See?

 

[Rogerio]

I can't translate it 100% correctly, but my course notes describe two different properties of a medium:
Literal translation:

"The band width." - ?

"The band width of frequencies" - as the difference of fmax and fmin

What does each exactly refer to, and what's its name in english?

Wikipedia is unhelpful and confusing.

It may refer to lots of things, and its name in english is bandwidth.
It seems perfectly explained at wikipedia. However, the reader is supposed to know the meaning of "Hertz, "frequency", "low pass filter", "spectrum", etc...

 

[Rogerio]

If you are interested in computer networks, maybe this http://en.wikipedia.org/wiki/Bandwidth_(computing)" can help.