Short tail keywords are one or two word phrases, such as “Nashville pet” or “German shepherds.”
Long-tail keywords are typically three words or more, and they are more of a phrase or question than a broad description. The long tail keyword examples: “find Nashville pet for adoption” or “adopt a German shepherd in Nashville, Tennessee.”
Short tail keyword means it have only single phase keyword.Example:camera
Long tail keyword means it have 3 phase and more that 3 phase keyword.Example:Sony cybershot camera 16MP.
Long tail keyword have more aspects in SEO.because it would not have too much competition,it could easily rank in search engines.