Basic, it's called, though as you can see, not everyone is equipped to speak it.

[He indicates the drawing of the Rodian she'd pointed out, with its elongated proboscis mouth, clearly unsuitable to the forms of language someone with a more usual conformation could produce.]

There are automatic translating machines, and of course protocol droids, but most people try to learn at least a few other languages. I could understand him, for example.