title: Category
text: # Category
  
  Category, plural categories, may refer to:
  
  ## Philosophy and general uses
  
  * Categorization, categories in cognitive science, information science and generally
  * Category of being
  * Categories (Aristotle)
  * Category (Kant)
  * Categories (Peirce)
  * Category (Vaisheshika)
  * Stoic categories
  * Category mistake
  
  ## Mathematics
  
  * Category (mathematics), a structure consisting of objects and arrows
  * Category (topology), in the context of Baire spaces
  * Lusternik–Schnirelmann category, sometimes called LS-category or simply category
  * Categorical data, in statistics
  
  ## Linguistics
  
  * Lexical category, a part of speech such as noun, preposition, etc.
  * Syntactic category, a similar concept which can also include phrasal categories
  * Grammatical category, a grammatical feature such as tense, gender, etc.
  
  ## Other
  
  * Category (chess tournament)
  * Objective-C categories, a computer programming concept
  * Pregnancy category
  * Prisoner security categories in the United Kingdom
  * Weight class (boxing)
  * List of software categories
  * Categories (word game)
  * Saffir–Simpson hurricane wind scale, a common categorization of hurricane intensities
  * Categories of New Testament manuscripts
  * Network cable categories: 1, 2, 3, 4, 5/5e, 6/6a, 7/7a (F)
  * A classification in a system of compartmentalization (information security)
  