what's the difference among them

[whlz]

What's the difference among chair,chair person and chairman?

[Vega]

I'm not good in english, but I'll try to help you

Chair is a thing where you can sit, when for example
you sit behind your computer you can use chair to sit on it. Chairman...it's an occupation, usually he/she is politician working in government organization...

[whlz]

I have a form that I should fill up.I should choose the position:chair,chair person or chairman.So I'd like to know the difference among them before I choose one of them

[Kirbo]

Chair= Object, furniture you use to sit on

Chairmain= Person, President/ Leader