Is PS Vita The Same As PS4?

Is PS Vita The Same As PS4? The PS Vita, Sony’s popular handheld console, is that companion device. And with the newly issued PS Vita 3.00 System Update, it will work seamlessly with the PS4. Is PS Vita a PlayStation? Original model of the PS Vita (PCH-1000) Website playstation.com/en-us/explore/games/psvita-games/ Can you play a PS Vita