What is long tail keyword in SEO?

We all know why keyWords are being used for better search engine optimization. basically, there are two types of keyWords longtail and shorttail, in longtail keyWords there are basically two to three different Words working as a single keyWord, whereas in shorttail it's the one-Word keyWord. When it comes to ranking it's always the longtail keyWords which are preferred for cause it's easy to rank them higher. for more you can search through jetwebsolutions