Here's a picture that shows the leaves and acorns from the three types of oaks that grow on my property. The top is the Valley Oak, the lower left is the Live Oak, and the lower right is the Blue Oak. A lot of people look at a Blue Oak and call it a Valley Oak, but as you can see from the leaves they're quite different.
What do the oak leaves in your neck of the woods look like?
What do the oak leaves in your neck of the woods look like?