Avert -

This implies active effort to stop a disaster, tragedy, or crisis [5.2, 5.5].

Key Difference: You avert a crisis you are facing, but you avoid a situation that could lead to one [5.2]. This implies active effort to stop a disaster,

At its core, avert (verb) means to turn away or to prevent something unpleasant or dangerous from happening [5.3, 5.6]. It originates from Latin roots meaning "to turn away from" [5.3]. Two Distinct Usages To Prevent or Ward Off (Unpleasant Events): or crisis [5.2

Prevent, ward off, stop, avoid, head off, derail [5.3, 5.6]. This implies active effort to stop a disaster,