U.S. History- Social vs. Cultural History?

I was looking at Collegeboard’s list of material on the test. Social history and intellectual/cultural history were listed. What is the difference between these two? I was thinking Social History would be e.g. slavery, whereas I/C history would be e.g. Manifest Destiny? Am I thinking along the right lines?

Knowing this, what would Progressivism be considered as? I’m thinking both. Thanks.