A logic class will suddenly try to teach you "eqvuilance relations", "Equivalence class", "Quotient set", "Projection", "Kernel" (Specifically in the Eqvuilance relation meaning), "partition", and that's only the terms I found in wikipedia. The class I help along has one more under this subject, and this is a first semester topic that is taught in a few weeks. All of those are technical, and all of those build on some other technical terms such as relations, functions, sets...
I concede that crypto has a bad naming scheme. It all sounds silly.