Coming, arrival (6)

I believe the answer is:

advent

I believe this is a double definition.

'coming' is the first definition.
(advent is the arrival or coming of something)

'arrival' is the second definition.
(advent is a kind of arrival)

(Other definitions for advent that I've seen before include "Christian season" , "Coming, arrival" , "The season leading up to Christmas" , "Time approaching Christmas" , "Forty days preceding Christmas" .)

I've seen this clue in The Guardian and The Sun.

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