Advance on one cad - criminal minister (9)

I believe the answer is:

subdeacon

I'm a little stuck... Click here to teach me more about this clue!

'minister' is the definition.
Both the definition and answer are singular nouns.
Maybe you can see a link between them that I can't see?

'advance on one cad criminal' is the wordplay.
'advance' becomes 'sub' (both can mean a loan).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'criminal' is an anagram indicator.
'one'+'cad'='onecad'
'onecad' anagrammed gives 'deacon'.
'sub'+'deacon'='SUBDEACON'

Can you help me to learn more?

(Other definitions for subdeacon that I've seen before include "Assistant priest" , "One preparing vessels" , "Junior minister" .)

I've seen this clue in The Daily Express.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.