Crossword Genius

Table section is equal (11)

Ross

I believe the answer is:

counterpart

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'is equal' is the definition.
(thesaurus)

I don't understand the rest of the clue.

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(Other definitions for counterpart that I've seen before include "Each of two copies of a legal document" , "Match" , "Duplicate" , "See opposite number" .)

I've seen this clue in The Mirror.
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