Might delete it later...

Hidden Leaf Village (Konohagakure, Konoha)

Hidden Mist Village (Kirigakure, Kiri)

Hidden Cloud Village (Kumogakure, Kumo)

Hidden Sand Village (Sunagakure, Suna)

Hidden Rain Village (Amegakure, Ame)

Hidden Stone Village (Iwagakure, Iwa)

Iryonin - medical ninja

Kekkei Genkai - Enhanced Genome

Kekkei tota - Extended Genome

Bijuu - tailed beast, tailed or demon

Doujutsu - eye technique (eye techniques).

Academy student

Genin

Chūnin

Special Jonin

Jōnin

ANBU (special unit)

Kage - head of one of the five great villages

Sannin (lit. The Three Legendary Ninjas) is the common title of Tsunade, Orochimaru, and Jiraiya.

The Hermit (Sennin) is a ninja who uses senjutsu. The word "Sennin" can also be translated as "Sage", as in the case of the Sage of the Six Paths (Rikudo Sennin). There is a possibility that this is not just a coincidence and that Rikudo could also use senjutsu, but there is no direct evidence for this in the manga.

Ninjutsu - ninja techniques

Genjutsu - Illusion Techniques

Taijutsu - close combat techniques (lit. "body techniques")

Senjutsu - Hermit Techniques

Doujutsu - eye techniques

Fuinjutsu - printing techniques (sealing techniques)

Juinjutsu - Cursed Seal Techniques

Kenjutsu - sword techniques

Nintaijutsu - combined ninja and close combat techniques

Kinjutsu - Forbidden Techniques

Hijutsu - secret (most often, clan) techniques