Reserve, capital, and solvency are three different jobs, not three words for the same cushion
The most important correction comes first. A reserve is not the same thing as capital, and neither of those is the same thing as a solvency framework.
Reserve or technical provision means the booked liability for expected obligations under policies or contracts. In plain English, it is management and actuarial work translated into a liability number the regulator expects to sit on the balance sheet.
Capital sits above those liabilities. Its job is to absorb adverse deviation: worse mortality, worse longevity, worse claims frequency, worse severity, worse lapses, worse expenses, worse asset performance, worse reinsurance collectability, or plain bad management.
Solvency rules are the framework that decides whether the liability estimate is acceptable, whether the capital layer is large enough, how often the insurer has to test itself, what must be disclosed, and when regulators step in.
That distinction matters because people routinely imagine a policy promise as if every premium were dropped into a personal vault for that policyholder. The primary documents do not describe the business that way. They describe a regulated balance sheet. Premium cash comes in. Liabilities are booked. Assets are held against those liabilities. Capital and surplus sit above them. Stress tests and supervisory triggers sit above that.
In plain English: reserve pays the expected bill, capital absorbs the bad surprise, and solvency rules decide when management must stop pretending the problem will fix itself.

