Classification system
system of descriptive information for an arrangement or division of objects into groups based on characteristics, which the objects have in common
SPARS code
International Numbering System
traditional taxonomy
range
women's team
ice type
Ler
character class
Chinese constellations
level
L-number
message-oriented middleware
cluster of differentiation
Strongly poisonous substances
slope rating
Sakai-ban
Whyte notation
SAE steel grades
automobile layout
Hynek's scale
Chinese character classification
decimal classification
Selection
Griffin
Alpine Club classification of the Eastern Alps
entertainment music and serious music
ethnos
double issue
Emergency Severity Index
hazard classes
Taxonomy of the Gastropoda
climate class
faceted classification
specialist organism
wood grain
Railroad classes (United States)
degree of a polynomial
natural habitat
CIA triad
party system
category
Pro Electron
Martial Race
star rating
History of measurement systems in India
Kauffman–White classification
Identification in Nazi camps
Garside classification
food grading
New Zealand Threat Classification System