Correlation
How much two things move together. Near 1, they move alike; near 0, independently.
A definition says what a thing is; it never says whether it fits you. The guides explain how it works and name the professional who confirms it for a particular person. The No Advice Disclosure.
Ask about Correlation
A model reads this page and answers from it. It will say when the answer is not on the page. Education, not personalized advice.