Some answers have no keyword to look for: quality, tone, and honesty. A rubric is a short written standard the grader is asked to apply, so the judgement has a definition rather than a memory.
About 1 min of reading
Write a rubric that fits in four lines
Write the standard
Before you run it, say out loud what it will print. Then open the answer.
Check every line is testable
Before you run it, say out loud what it will print. Then open the answer.
Add the unsure label
Before you run it, say out loud what it will print. Then open the answer.
Past a few lines the rubric starts grading itself. Each line must be checkable on the output alone.
Pass, fail, unsure. A ten point scale invites disagreement that carries no more information than three labels.
State the standard in the same words every time. The grader is not remembering a standard, it is reading one.
A grade with a reason can be argued with. A grade alone is a coin flip nobody can correct.
A judge model has its own failures. That is why the rubric is short, and why the judge is never the only grade.
Each one is defined here on this site. Open the entry for the full definition and the other words it points at.