Commercial book awards (8)

I believe the answer is:

adjudges

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'awards' is the definition.
Although both the answer and definition are verbs in their -s form, I don't see how they can define each other.

'commercial book' is the wordplay.
'commercial' becomes 'ad' (abbreviation for advertisement).
'book' becomes 'judges' (book of the Old Testament).
'ad'+'judges'='ADJUDGES'

Can you help me to learn more?

I've seen this clue in The Guardian.

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