Property	Expected Type	Description
Properties from Property
domainIncludes	Class	Relates a property to a class that is (one of) the type(s) the property is expected to be used on.
inverseOf	Property	Relates a property to a property that is its inverse. Inverse properties relate the same pairs of items to each other, but in reversed direction. For example, the 'alumni' and 'alumniOf' properties are inverseOf each other. Some properties don't have explicit inverses; in these situations RDFa and JSON-LD syntax for reverse properties can be used.
rangeIncludes	Class	Relates a property to a class that constitutes (one of) the expected type(s) for values of the property.
supersededBy	Class  or Enumeration  or Property	Relates a term (i.e. a property, class or enumeration) to one that supersedes it.
Properties from Thing
additionalType	Text  or URL	An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. Typically the value is a URI-identified RDF class, and in this case corresponds to the use of rdf:type in RDF. Text values can be used sparingly, for cases where useful information can be added without their being an appropriate schema to reference. In the case of text values, the class label should follow the schema.org style guide.
alternateName	Text	An alias for the item.
description	Text  or TextObject	A description of the item.
disambiguatingDescription	Text	A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
identifier	PropertyValue  or Text  or URL	The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
image	ImageObject  or URL	An image of the item. This can be a URL or a fully described ImageObject.
mainEntityOfPage	CreativeWork  or URL	Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details. Inverse property: mainEntity
name	Text	The name of the item.
potentialAction	Action	Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
sameAs	URL	URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
subjectOf	CreativeWork  or Event	A CreativeWork or Event about this Thing. Inverse property: about
url	URL	URL of the item.

Property	On Types	Description
constraintProperty	ConstraintNode	Indicates a property used as a constraint. For example, in the definition of a StatisticalVariable. The value is a property, either from within Schema.org or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.
inverseOf	Property	Relates a property to a property that is its inverse. Inverse properties relate the same pairs of items to each other, but in reversed direction. For example, the 'alumni' and 'alumniOf' properties are inverseOf each other. Some properties don't have explicit inverses; in these situations RDFa and JSON-LD syntax for reverse properties can be used.
measuredProperty	Observation  or StatisticalVariable	The measuredProperty of an Observation, typically via its StatisticalVariable. There are various kinds of applicable Property: a schema.org property, a property from other RDF-compatible systems, e.g. W3C RDF Data Cube, Data Commons, Wikidata, or schema.org extensions such as GS1's.
statType	StatisticalVariable	Indicates the kind of statistic represented by a StatisticalVariable, e.g. mean, count etc. The value of statType is a property, either from within Schema.org (e.g. count, median, marginOfError, maxValue, minValue) or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.
supersededBy	Class  or Enumeration  or Property	Relates a term (i.e. a property, class or enumeration) to one that supersedes it.
variableMeasured	Dataset  or Observation	The variableMeasured property can indicate (repeated as necessary) the variables that are measured in some dataset, either described as text or as pairs of identifier and description using PropertyValue, or more explicitly as a StatisticalVariable.

Terms and conditions