I don't care if you invent words, if you call your function zork that's fine, it's still a pronounceable word. When I say real word, I mean it has consonants and vowels and is speakable. It's abbreviations that annoy me.
Agreed all around. Whether or not a name sounds right when you say it is one of the criteria we use on our project for naming design ideas. If you're interested in the rationale behind this, Eric Evans' book Domain Driven Design articulates a concept of design as the "ubiquitous language" of a project that I have found very useful.
