Jutsu does not meerly mean "art", it means "art of war".
I do Jujutsu, I love Judo, but one is for the battlefeild and the other is for the Dojo, not that it does not have it's uses in the street.
I'm no expert in the japanese language but I will share some of what I know.
Jutsu translates skill or art.
Do translates to Way or Path.
To say war arts you must add the preffix
Bu (which translates to war) to make
Bujutsu.
Conversely
Budo translates to way of war.
Shi translates to scholar or master as in highly skilled, exemplary.
Bushi translates to warrior scholar.
Bushido translates to way of the warrior.
I've never heard the term
Bushijutsu but it would translate to Art of the Warior.
The disctinction made between Do & Jutsu began when Japan moved into the modern era and the
Koryu (Old School) Methods became archaic and outdated, even illegal or heavily regulated in Japan.
Jujutsu (Gentle Art) was the name for the Samurai's hand to hand method to complement their weapon skills. The objective of Jujutsu techniques was to kill or keep yourself from getting killed.
Judo (Gentle Way) is the name for a sport developed by Jigoro Kano from techniques collected from a number of Jujutsu schools. The objective of Judo is to develop fitness, self defense skills, and win competitions.
Aikijutsu is a pretty brutal and deadly form of Jujutsu.
Aikido is a very soft style developed to defend yourself without hurting your attacker.
Karate-Do (empty hand way) was a term developed by Ginchin Funakoshi to "market" Okinawan Kempo to the Japanese people. The term Karate was favored over the term
Kempo (Fist Law) to distinguish the art it from it's roots in chinese Chuan Fa. Whatever you call it Karate, Okinawan Te (hand), or Okinawan Kempo - it has no battlefield jutsu roots in Japan. Although, according to an article written by Jigoro Kano, Kempo was a term used to describe the unarmed tactics of the Samurai in addition to Yawara, Kumichi, & Jujutsu. Though most will agree that the focus of these arts was mostly grappling but they did include
Atemi (striking).
It's relevant and interesting so I'll post links to the article by Jigoro Kano.
Part one of the Jigoro Kano Article.
Part two of the Jigoro Kano Article.
_Don Flatt