JS and Vanillah JS

I’m new at Javascsript and wanting to learn but I got confused on the difference between the two.
Where should I learn first?
What’s the recommended?
Is the other one better compare to the other one?

There isn’t any difference. It’s “vanilla”, which is US/UK English slang for plain. As in “just JS, no frameworks”. Which is what you’ll be doing most of the time.