What is the difference of kung fu and karate?
There are huge differences and a few similarities. Karate has only certain aspects of mostly white crane kung-fu in it. Not a bad thing, it is just a more specialized art. Karate also is made up of Okinawan Te. Kung-fu in general is much more complex and has more methods of generating power and more grappling. I could write pages here so you will have to read more yourself. Which is better for starters? Impossible to answer without knowing you and your abilities, both physical and mental.