Refeeds are planned and still counted, typically being an increase in carbohydrate intake to replenish glycogen for various hormonal, mood, energy benefits.
Cheat meals are a "i deserve a break from being so strict" meal where you eat what you want. No counting or tracking. Ideally (to limit damage) just one meal.
In the midst of a good dietary regiment neither should be detrimental. If you are already very lean I opt for refeeds only, to keep weight loss from stalling