What does it mean when people put Chan and Kun and San at the end of saying a persons name?

Answer 1

Japanese honorifics are used with variety of meanings and are somewhat unique to the language. For a full review visit:

http://en.wikipedia.org/wiki/Japanese_honorifics

For a short introduction of the ones you might come across more frequently:

- Chan (ちゃん) represents familiarity or common fondness , mostly used for teen girls and younger people. You might come across tan which is very informal and more used by girls, but is the same as chan.

- San (さん) represents a standard degree of respect, most widely used when you are yet to become more friendly with someone, or someone of higher age, social position or some sort of positional superiority. Sometimes you see han which is kansai dialect (Used by people of Kyoto and some other cities from central Japan) derivation of san.

- Kun (君 , くん) represents keen and sometimes passionate respect. It is used in contrast to san and chan, it is used by senior or someone of higher status or age towards their junior and mostly used for males.

Answer 2

Kun-girls use this to boys they are attracted to or have known for a long time. It's also meant for teenage boys.

Chan-used for babies young children or teenage girls.. Girls also add it to their names to sound cuter.

San-It's like Mrs,Mr, Miss. Some people use it for pets as well though in English we don't do that.