It's the end of a traditional match (5)
I believe the answer is:
death
This clue might be a double definition.
'it's the end' is the first definition.
(death is a kind of end)
'a traditional match' is the second definition.
The answer and definition can be both related to natural events as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'of' is the link.
(Other definitions for death that I've seen before include "The grim reaper" , "Annihilation" , "Cessation of life" , "End of life" , "destruction" .)