How many different words does one person use in the English language in one day?

Thanks for accepting my findings as your answer. I've reposted the material below.

"According to Ilan Stavans, author of Dictionary Days, the average
American uses 2,000 different words every day, just a fraction of the
nearly 200,000 words listed in the Oxford English Dictionary."

Colossal Waste of Time Blog
http://colossalwasteoftime.blogspot.com/2005_02_01_colossalwasteoftime_archive.html

If you are interested in other fascinating facts about language, I
highly recommend the book mentioned above. "Dictionary Days" is both
entertaining and educational.

Amazon.com: Dictionary Days
http://www.amazon.com/gp/product/1555974198

I hope this is helpful. If anything is unclear or incomplete, please
request clarification; I'll gladly offer further assistance before you
rate my answer.

Best regards,
pinkfreud

Fast and efficient service that this first time user will be using again! Thank you.

Please let me know if this would be a fully satisfactory answer:

"According to Ilan Stavans, author of Dictionary Days, the average
American uses 2,000 different words every day, just a fraction of the
nearly 200,000 words listed in the Oxford English Dictionary."

http://colossalwasteoftime.blogspot.com/2005_02_01_colossalwasteoftime_archive.html

Yeah, that's exactly what I wanted to know. Thank you! A very
impressive service for a first time user and I'll be using it again.
Have a good weekend and thanks again. Andrew