Hi,
Just picked random tweets in which the word "life" appears, and ordered the words by number of appearences. Then did the same with tweets where the word "car" appears. I just picked the common words ammong the two lists and plotted the position in the first list in x, and the position in the second list in y.

This ordered distributions happens always that a word with meaning is picked, and not all random tweets ( in that case distribution is almost random).

How do you interpret the fact that there are clusters of words describing functions?