I learn English and I noticed that my vocabulary is just increased with useless words. For example, play - plays, playing, played end, etc are all considered like different learning words. Moreover, different words such as names of Cities, Places, buildings, universities and so on add to learned words as well. At the same time, I have no reason to add them to the list to study. A can make a conclusion that word count measuring, and giving an english rank level depending on "known words" is not reliable at all. And this number means nothing. What do you think?