If people or things are divided into categories, they are divided into groups according to their qualities and characteristics. There was one winner in each category.
Think of the game show "Jeopardy!," and how each column is a different category of questions — like "Literary Characters" or "Potent Potables." The noun category has the sense of ordering or sorting. In Biology, the science of taxonomy is all about categorizing all living organisms.
Definition of category noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Categories (along with other features like cross-references, lists, and infoboxes) help you to find information, even if you don't know what exists or what it's called. The following list of categories of Wikipedia's coverage parallels our other lists by topic.
Categories are foundational elements in knowledge systems and databases, helping organize and process information logically. In its most common use, "category" acts as a system for classification, grouping items by shared characteristics or attributes.