30?

Talking about elements in science and to illustrate the number of compounds that could be made I brought up the number of words we have. I told the class, there are 26 letters in the English language. How many words, ballpark, do you think are in the English language.

D., a ninth grade young man, thinks and finally says, "There's about 30."

Dumbfounded I say, "D., how many words do you know in the English language?"

D. looks at me and says, "All of them!"