[NeoKakashi]

Spoiler for San:

Carries the meaning of "Mr.," "Mrs.," "Miss," ect, but used more extensively in Japanese than it's English equivalent (note that even an enemy may be addressed as -san.)

Spoiler for Chan:

Can be used as either a diminutive (with a small child; "little Konohamaru"), or with those who are grown, to indicate affection. ("My dear...")

Spoiler for Kun:

Used in modern day Japan for male students, or those who grew up together, as well as to indicate familiarity or affection.

Spoiler for Sensei:

Teacher, master, doctor, ect.