* Positrons and electrons have opposite charges: This is the fundamental difference. Positrons have a positive charge, while electrons have a negative charge.

* Opposite charges can lead to opposite directions in certain situations:

* Magnetic fields: If a positron and electron are moving in a magnetic field, they will experience forces in opposite directions due to their opposite charges.

* Electric fields: Similarly, in an electric field, they would be accelerated in opposite directions.

* However, they don't inherently move in opposite directions: Their movement depends on the forces acting on them, and those forces can be independent of their charges.

In short: While their opposite charges can lead to opposite motion in specific situations, it's not an inherent property of positrons and electrons.