The Center for Reading Research:
Some words are better known to men than to women and the other way around. But which are they? On the basis of our vocabulary test, we can start to answer this question. These 24 words should suffice to find out whether a person you are interacting with in digital space is male or female.
I knew all twelve of the “men’s words” and all but two of the “women’s words”. If you have the time, be sure to take their vocabulary test, too.