I'm not going through definitions here. Let's just say that a hexcrawl means exploring a territory that is divided by hexes, with no clear paths, and a pointcrawl means exploring a territory through preexisting paths and points of interest.
This is a typical pointcrawl map (source). You cannot make your own path; to get from Gettysburg to Grafton you must pass through Harper's Ferry.
You can have both at once (source):