Oh for flip's sake, biologists!
Apomorphies, synapomorphies, symplesiomorphies... cladograms, phylograms, phylogenetic trees... monophyletic, paraphyletic and polyphyletic groupings...
Seriously, I'm on, like, chapter two of Futuyma's Evolution and I'm drowning in vocab like I'm doing languages rather than science. Especially since I've also just started the fossils section of the geology course and thus started to become familiar with ambulacra and tubercles, umbones, pallial lines and pallial sinuses; you get the idea.
Why? Why? Whyyyyyyyyyyyy?