If you don't keep to a restricted meaning of science the anglo-saxon way, saying that science is what the natural sciences are, but comprehend it more the continental European way, so including social sciences and the humanities in what could be seen as scientific enterprises, then science will include studies and analysis of nature, culture and mind like the collected subject matters of a university. This is the way science will be looked upon here. Scientific understanding is always the understanding of something, and it is a specific understanding from a given scientific perspective provided by the theories used for investigation and analysis.
Science is the collection of all examples of science.
If the right things are done the right way, then the results often are held as ultimate truths about the real world. When this is the case, it is unfortunate, because no result is more true than the theory it rests on. If there is any theory around that is absolutely true about the reality it covers is indeed an open question. The research results produced within science with their potential use are the products of science that sell, and the goods from science that have a market. It is the appreciated public side and life of science.