variation

noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about variation at Wordnik → Where our words come from →

1. The act of varying; a partial change in the form, position, state, or qualities of a thing.
2. A related but distinct thing.

   When the process didn't work, we tried a variation.

3. The angular difference at the vessel between the direction of true north and magnetic north.