They are usually roughly the same material. (The terms are not super-precise, and college algebra in particular can have different meanings.) If you want to continue with calculus, then to the extent they are different, pre-calculus would be the way to go.

"When publishers market their textbooks, sometimes the key difference between college algebra and pre-calculus is this: pre-calc emphasizes a unit circle for trig functions, while college algebra uses right triangles. Other than that, the pre-calculus book has more complicated problems, but no substantive differences. Both courses trace their ancestry back to the 19th century mathematics course later known as ‘college algebra’. "