[jtheory]

Right, unless you want to ruin your point entirely by stopping to define words. Communication relies on shared vocabularies, not just one person's vocabulary.

There are plenty of words I know that I generally avoid in conversation for practical reasons. Entertainment reasons, though... I caught my wife teaching our not-yet-two-years-old daughter to use the word "etiolated" when referring to a green bean that was wilted and yellowish.