CC/PP document conformance

hello

 

I have a question.

 

TR name : CC/PP : structure and vocabularies

5.1 CC/PP Document Conformance

 

no.8  

 

" If a component type is given as an element name and as an rdf:type element, they

MUST refer to the same URI. "

 

here, what "an element name " means ?

 ;