The 'K' stands for Kalashnikov, the surname of the inventor of the weapon. The A stands for AVTOMAT- Russian for automatic. Why 47? The year of invention.
Avtomat Kalishnikov
I assume you mean full-automatic variation of an AK-47. It's called an AK-47 or Avtomat Kalashnikova 47 originally developed in the 1940s in the Soviet Union by Mikhail Kalashnikov. Any semi-automatic AK-47 is not truly a Kalashnikov. For example, the variant made in Romania in the 1950s is actually a clone designated the WASR-10.
Yes, the AK-47 is generally more powerful than a typical submachine gun. The AK-47 is an assault rifle that fires a larger 7.62×39mm rifle cartridge, which provides greater range, velocity, and stopping power. Submachine guns, on the other hand, usually fire pistol-caliber ammunition such as 9mm or .45 ACP. These rounds are less powerful and are designed for shorter-range use and better control in close quarters. Because of the larger rifle cartridge, the AK-47 has higher power, longer effective range, and greater penetration compared to most submachine guns. However, submachine guns are typically lighter, easier to control in automatic fire, and better suited for close-range situations.
Aktomat Kalashnikova 1947
The "47" in "AK-47", refers to the weapons date of Patton (1947).
Google image search for AK-47
No, the AK-47 is classed as an assault rifle.JOPUOPYY69 JU897
It is a type of gun
The AK-47 fires a substantially more powerful cartridge.
AK-47
No
Its an assault rifle.