These data will tell you that how can you get your site rank in the search engine and how it is currently ranking
. It will suggest you the keywords which is best for your site and can rank fast in the search engines. Most tools called as keyword generator which suggest you the best and relevant keywords for yours site. These tools are able to show the information about for which keywords your website is currently ranking. If you want to know that for what keywords your website getting traffic then you should use web analytics tools to know about it.