Add component adds symbols. DIL-14 is a package/footprint.
In eeschema you add the symbol for the chip you want to place and connect it via cvpcb or the lib editor or via the symbol properties/footprint browser to the DIL-14 footprint.
So for what component is this generic Dil-14 footprint used?
A while back i wrote up a summary of what a symbol or footprint is and how they are connected in kicad: