My vocabulary, contrary to what some might think, is very limited. Since I use the web so often and since there is a lot to read, I often come across words that are very familiar but meaningless to me. Being lazy, I hardly use references like WordWeb and Answers, and even when I do, I seldom carry the meaning beyond the context since my memory is perpetually defunct.
Enter the ubiquitous Microsoft Excel. I hope to shake off my lethargy and use references to ferret semantics and record them in Excel.
Maybe 20 years will be enough to make the difference conspicuous.