N over n
The 'agreement' group
These nouns refer to an agreement or decision.
The two men apparently reached a compromise over the disputed issue of taxation.
The preposition over is sometimes followed by an '-ing' clause.
A bitter row among Cabinet Ministers has forced the government to delay making a decision over widening the M25 to 14 lanes.
The preposition over is sometimes followed by a wh-clause.
agreement compromise decision
The allies are not in complete agreement over where outside of NATO territory the force can be deployed.