Since avoidance usually has the same goal as compulsive behaviors, and it's performed in anticipation of specific scenarios, it basically isa compulsion.

Which behavior would be considered a compulsion?

"The main idea of compulsive behavior is that the likely excessive activity is not connected to the purpose to which it appears directed." Furthermore, there are many different types of compulsive behaviors including shopping, hoarding, eating, gambling, trichotillomania and picking skin, itching, checking, counting, ...

What makes something a compulsion?

Compulsions are repetitive behaviors, such as handwashing, or mental acts, such as praying or counting, that the person uses in response to their obsessions, with the goal of neutralizing the threat and reducing distress—although they do not usually achieve those goals.