What is the difference between a media company and a communication company?

I thought media means communication so what's the difference between the two?

like XYZ Media to XYZ Communication?What is the difference between a media company and a communication company?
a communication company really does not deal with advertising and so on. example AT%26amp;T only handles things like fiber optic lines telephone and wireless services through their communications network.

CLEAR CHANNEL MEDIA handles everything from television broadcasting radio stations to billboard advertising and all the things you can physically see with your eyes, and hear.

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