We all know and use the widely accepted term lamination crack and retained lamination. Why are these the terms used? I find the numismatic community to be one of the more educated and intelligent hobbyist community's I've interacted with. These terms describing the errors seem absolutely incongruous with the faults observed with these coins. Lamination is the process of joining two thin materials together. Delamination is the process of splitting apart of laminated layers. A failure of the adhesive joining the layers. Why isn't a retained lamination referred to as a retained delamination? That seems so much more descriptive of the failed process. Hopefully we can get some input from some of our resident experts, @JCro57 , @Fred Weinberg , @paddyman98 Thanks in advance for clarifying this for me.