The following are SharePoint Dictionary Words of the Day Related to Metadata:
Metadata index
Data structure which stores properties that are associated
with each item, and attributes of those properties.
Metadata model
Collection of related objects which define how to interact
with a specific line-of-business (LOB) system.
Metadata schema
A schema which capable of having information about an item.
Metadata store
Stored aspects of metadata that contains storage for the metadata
object types.
Metadata Object
Data structure which consists of a set of attributes that
represent the following built-in aspects: lob system, lob system instance, data
class, entity, method, method instance, parameter, type descriptor, identifier,
filter descriptor, action, action parameter and association.
MetadataObjectId
Attribute which identifies a metadata object that is stored
in a metadata store.