Logical Grouping of characteristics that belong together is called
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Dimension
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Fact
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Keyfigure
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Attribute
A Dimension in SAP data warehousing is a logical grouping of related characteristics that belong together semantically. For example, a 'Customer' dimension might group characteristics like Customer ID, Customer Name, Region, and Industry. Dimensions improve query performance by enabling star schema optimization. A Fact contains key figures. Keyfigures are numeric metrics. Attributes are properties of characteristics.
A Dimension in a BW InfoCube is exactly that: a logical grouping of related characteristics (for example, a 'Customer' dimension grouping customer ID, region, and industry). A Fact holds the key figures/measures, a Key Figure is a single measure value, and an Attribute is a property of a characteristic — none of those describe the grouping construct itself.