Class
in ontology, a collection of items sharing common characteristics; classes provide an abstraction mechanism for grouping resources with similar characteristics
variation of basketball
genre
airborne early warning radar
mine flail
tournament
memorial to William Tell
constellation family
first principle
Emergent plant
asset classes
genus
type of snow
fruit wine
layer
Library of Congress Classification:Class B -- Philosophy, Psychology, Religion
Naval Science
military activity
National Register of Historic Places property type
class of computers
protein superfamily
Protein subfamily
standard ruler
food group
types of earthquake
wine color
building type
part of speech
conservation status
national treasure
mathematical singularity
alpine-style house in Volary
complexity class
Mediterranean triad
standard candle
type of offense in Polish law