Difference between Helix and Spiral

What is the difference between Helix and Spiral?

Helix as a noun is a curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase. while Spiral as a noun is a curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.

We hope you now know whether to use Helix or Spiral in your sentence.