I’ve been seeing the curious use of “typo” to mean “font” or “typeface” with what seems increasing frequency, usually from folk who identify themselves as tyros. Where has this odd usage come from? From where is it being picked up? Are these people truly unaware that “typo” means an error in typesetting? It makes their posts both baffling and amusing.
David
I'm a bit skeptical of the high numbers given on those sites too. My best guess is an average American adult vocabulary (knowing the definition of words as opposed to simply recognizing them) consists of around 15,000 to 20,000 words, but, hey, I'm no expert.
For what it's worth, here's an online vocabulary test (English) that claims to estimate the vocabulary of those taking it. The statistical results from those taking the test are, of course, skewed in the direction of those choosing to take the test and, likely, having larger vocabularies. These skewed results showed an cumulative median to be around 30,000 words.
http://testyourvocab.com/
No matter where the more accurate numbers lie, though, it seems clear that an average American has a vocabulary far larger than 1,500 words.