Japanese is commonly spelled Jujitsu (or Jujutsu) while Brazilian is spelled jiu jitsu. Either way, Brazilian is a small portion of the corpus of Japanese arts/styles. The Brazilians just renamed the arts and selected some of the ground fighting stuff.
Discussion
Didn’t know the difference in name, thanks! Bring more martial arts topics in Nostr! Would love to hear more about combat yoga when you have the time!