I believe you are thinking of Escrima or Kali knife fighting, a subset of FMA (Filipino Martial Arts) Escrima deals with more than just knives, but it is one of the most popular forms of weapons combat in the MA world.
Jang Pow.
Martial arts is the study of warfare and the way of combat. Using a weapon is a martial art. The Marine Corps specifically includes the use of guns and knives in their fighting style.
apkido
Yes, Judo is a martial art that was based on JuJitsu.
It is Majest Martial Art.
Its not a martial art its a training drill.
Mixed Martial Art (MMA)
No; most martial arts historians are in agreement, that it is wrestling which holds that honor. No, actually, the first real martial art is believed to be an inian martial art known as Kalarippayattu.
The name will depend upon the martial art. In karate it is called a kata. Other arts use the word form or poomse for a sequence.
{| |- | Street fighting is not a martial art. It uses and develops many martial skills. But there is more to a martial art than simply a series of skills. There are also philasophies and understanding that is included with the teaching a marital art. |}
Judo is originally a Japanese martial art which emphasises throwing.
The martial art you are looking for is Parkour.