When do I use ley vs. derecho?

Question

Thank you

Answer 1

{derecho}has many meanings, [noun] law, right, legitimacy, jurisdiction, entitlement, canoness, title, redress, rectum [adjective] right, upright, direct, straight, onside, erect, standing [adverb] right, bolt upright, directly, straight, direct {ley} is more so law.

Answer 2

Here's the meaning of ley and derecho, you can basically find the difference.