According to the Stanford Encyclopedia of Philosophy:
It is common in epistemology to distinguish among three kinds of knowledge. There’s the kind of knowledge you have when it is truly said of you that you know how to do something—say, ride a bicycle. There’s the kind of knowledge you have when it is truly said of you that you know a person—say, your best friend. And there’s the kind of knowledge you have when it is truly said of you that you know that some fact is true—say, that the Red Sox won the 2004 World Series.
There is also a long-standing debate in epistemology—which is the branch of the philosophy concerned with understanding knowledge—over how to understand the difference between the first and third of these kinds of knowledge. Is knowing how to do something just a matter of knowing facts about it? Or is there a different kind of learning you have to do to gain that knowledge?
We explain the basics of the debate in this video. For a more detailed discussion, visit the Stanford Encyclopedia of Philosophy article on the topic.