What's the difference between 6-string and 12-string guitars?

Key Differences Between 6 String And 12 String Guitars

Downloading Dave Matthews' 12 String Guitar from the Internet

QUESTION] I just got a 12 string acoustic guitar converted to a

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What's The Difference Between 6-string And 12-string Guitars

What's The Difference Between 6-string And 12-string, 58% OFF

What are the differences between a 12 string and a 6 string guitar

Who here plays 12 string acoustic?