Run-in and Set-to

Run-in noun - A brief clash between enemies or rivals.

Set-to is a synonym for run-in in argument topic. In some cases you can use "Set-to" instead a noun phrase "Run-in", when it comes to topics like fight.

Set-to noun - An often noisy or angry expression of differing opinions.

Run-in is a synonym for set-to in disturbance topic. You can use "Run-in" instead a noun phrase "Set-to", if it concerns topics such as argument, disagreement, fight, battle.