Come to a conclusion (6)
'come to a conclusion' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for end that I've seen before include "'Conclusion, finale (3)'" , "Intention" , "Final part" , "American footballer" , "scrap" .)
'come' is the definition.
Although both the answer and definition are verbs in their base form, I can't see how they can define each other.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for decide that I've seen before include "Conclude" , "Resolve or give a judgment" , "Choose" , "Make a judgment" , "Adjudicate" .)