<P> Tan (たん) is an even more cute or affectionate variant of "chan". It evokes a small child's mispronunciation of that form of address, or baby talk--similar to how, for example, a speaker of English might use "widdle" instead of "little" when speaking to a baby . Moe anthropomorphisms are often labeled as "- tan", e.g., the commercial mascot Habanero - tan, the manga figure Afghanis - tan or the OS - tans representing operating systems . </P> <P> Bō (坊 (ぼう)) is another diminutive that expresses endearment . Like "chan", it is used for babies or young children, but is exclusively used for boys instead of girls . </P> <P> Senpai (先輩 (せん ぱい)) is used to address or refer to one's elder colleagues in a school, dojo, or sports club . So at school, the students in higher grades than oneself are senpai . Teachers are not senpai, but rather they are "Sensei ." Neither are students of the same or lower grade: they are referred to as kōhai . In a business environment, those with more experience are senpai . </P> <P> Sensei (先生 (せんせい)) (literally meaning "former - born") is used to refer to or address teachers, doctors, politicians, lawyers, and other authority figures . It is used to show respect to someone who has achieved a certain level of mastery in an art form or some other skill, such as accomplished novelists, musicians, artists and martial artists . In Japanese martial arts, sensei typically refers to someone who is the head of a dojo . As with senpai, sensei can be used not only as a suffix, but also as a stand - alone title . The term is not generally used when addressing a person with very high academic expertise; the one used instead is hakase (博士 (はかせ)) (lit . "doctor" but the actual meaning is closer to "professor"). </P>

What is the difference between san chan and kun