What are the differences between Abstract Factory and Factory design patterns?

Question

I know there are many posts out there about the differences between these two patterns, but there are a few things that I cannot find.

From what I have been reading,

Answer 1

Let us put it clear that most of the time in production code, we use abstract factory pattern because class A is programmed with interface B. And A needs to create instances of B. So A has to have a factory object to produce instances of B. So A is not dependent on any concrete instance of B. Hope it helps.