contention

contention /kənˈtɛnʃən/ noun
plural contentions
contention
/kənˈtɛnʃən/
noun
plural contentions
Britannica Dictionary definition of CONTENTION
1 
[count] : something (such as a belief, opinion, or idea) that is argued or stated
2 
[noncount] : anger and disagreement
◊ A bone of contention is something that causes anger and disagreement.
3 
[noncount] : a situation in which you have a chance to win something that you are trying to win