category       
noun [ C ] uk/ˈkæt.ə.ɡri/ us/ˈkæt̬.ə.ɡri/
B2 种类,类别,范畴
(in a system for dividing things according to appearance, quality, etc.) a type, or a group of things having some features that are the same
  There are three categories of accommodation - standard, executive, and deluxe. 有3种住宿标准——标准房、公务房和豪华房。 
 - More examples
 - There's a prize for the fastest three runners in each category.
 - Each category has several subdivisions.
 - He's running in the veterans category.
 - The produce is sorted into categories according to quality.
 - There are sporty people and non-sporty people, and I'm definitely in the second category.