In HTML, "linking" is a contraction of "hyperlinking". I guess deep linking and hyperlinking have a significant cross-over, maybe to the point where it's not a useful distinction?
Flat head screws and pan head screws have similar cross-over in that both are screws. To someone who thinks assembling IKEA cabinets counts as woodworking, the term screw is enough. To someone involved in actual manufacturing, the more specialized terminology remains important. Specialists will always have reason to use more precise language than generalists.