Contests marriages? (7)
I believe the answer is:
matches
This clue could be a double definition.
'contests' is the first definition.
(match is a kind of contest)
'marriages?' is the second definition.
The answer and definition can be both groups as well as being plural nouns.
Maybe there's an association between them I don't understand?
Can you help me to learn more?
(Other definitions for matches that I've seen before include "Agrees" , "Picks out for union potential" , "strikers found in the box?" , "Sporting occasions" , "Shares a colour with" .)