Mount And Bladeserial Key What's The Difference Between An Altazimuth Mount And A Dobsonian Mount?

What's the difference between an Altazimuth mount and a Dobsonian mount? - mount and bladeserial key

I think buying an Orion telescope 6 inches. In my price range, there are two possibilities. It was a kind of framework azimuth and the other has a style Dobsonian mount. T-You tell me what is the difference between these two types of assembly?
I think I remember somewhere that Dobson be better for a beginner like me would be, but I do not know why.
Thank you.