category category /ˈkætəˌgɔri/

noun

1. () A collection of things sharing a common attribute  ( family , class , category )
   a collection of things sharing a common attribute
    There are two classes of detergents
   there are two classes of detergents
   
2. () A general concept that marks divisions or coordinations in a conceptual scheme  ( category )
   a general concept that marks divisions or coordinations in a conceptual scheme