Is There a Difference Between a Whale and a Killer Whale?

Baling whales and killer whales are more closely related than i am to a cow. The ancient ancestor of the whales live on land for a while? Yead got fed up? Yes. And then, you know, spawned infinite population when it was on land. Was it a cow? Did it resemble more closely a cow? It was actually just a whale, but with those two little feet, with shoes, like one of those wind up walking ties.