Wikidata:WikiProject Ontology/Second order classes

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#	Second order class	Description	Model items
1	taxonomic rank	level in a taxonomic hierarchy
2	homologous series	series of chemical substances with the same general formula, varying by a single parameter
3	model series	group of related products, sold simultaneously or consecutively
4	drug class	category of drugs used to classify a drug according to certain criteria
5	weapon family	group of related weapons which share basic design elements
6	group of isomeric entities	set of several isomers (e.g. two cis/trans isomers, three ortho, meta, para isomers); such set have countable, usually a small number of elements
7	group or class of chemical substances	set of chemical substances that share a common characteristic
8	missile family	group of related missile models
9	second-order class	metaclass whose instances are classes of individuals	cell type
10	vehicle model series	series of substantially similar vehicles
11	metaclass of ambassadors
12	ammunition family	family of ammunition types related by one or more design features
13	structural class of chemical entities	set of chemical entities sharing a common structural feature to which is attached a variable part (or parts) defining a specific entity of the class
14	pharmacological class of chemical compounds	set of compounds sharing a similar pharmacological properties
15	group of chemical entities	set of several chemical entities; such sets have countable, usually small number of elements
16	tractor model series	group of related tractor models sharing the same basic design
17	class of chemical entities with similar applications or functions	set of chemical entities sharing a similar applications or functions
18	class of chemical entities with similar source or occurrence	set of chemical entities sharing a similar source or occurence
19	group of stereoisomers	set of several stereoisomers
20	automobile model series	group of related automobile models
21	motorcycle model series	group of related motorcycle models
22	group or class of chemical entities	set of chemical entities that shares a common characteristic
23	imprecise class of chemical entities	set of chemical entities with imprecisely defined common features, that have no classification value
24	group or class of strains	set of strains that share a common characteristic
25	group or class of proteins	any class, set, or group of proteins; proteins need not be related
26	anatomical metaclass
27	type of fixed-size set	type of collection of entities that is defined by the number of elements
28	combat vehicle family	class of vehicles equipped with weapons
29	medical metaclass
30	direct anatomical metaclass	anatomical metaclass that has direct instances
31	indirect anatomical metaclass	anatomical metaclass that has no direct instances
32	rocket series	series of related rocket models
33	weapon model series	DEPRECATED group of related weapon models
34	scientific instrument model series	A series of scientific instrument models, sold for an extended period of time under the same model name, which may or may not have significant differences between models
35	engine series	series of related engine models
36	prosodic group	grouping of lexical items based on their prodosic properties
37	torpedo family	torpedoes with similar characteristics
38	firearm family	firearms with similar characteristics
39	combat aircraft family	group of related combat aircraft models sharing the same basic design
40	ammunition model series	DEPRECATED group of related ammunition types
41	combat vehicle model series	DEPRECATED group of related combat vehicle types
42	firearm model series	DEPRECATED group of related firearm types
43	missile model series	DEPRECATED group of related missile types
44	torpedo model series	DEPRECATED group of related torpedo types
45	combat aircraft model series	group of related combat aircraft types
46	artillery family	artillery with similar characteristics
47	artillery model series	DEPRECATED group of artillery models with similar characteristics
48	film rendition of song	used to identify specific versions of songs that appear in films (either performances or recordings), as opposed to their work item (the song itself)

End of automatically generated list.