The total number of backlinks and their quality pointing to your complete website result in the overall authority of your domain. The external links that all point to a specific page will help this page to rank in the search engine results (SERPs). The relevance and quality of an external link are very important factors when you like to measure the impact / value of an link. To find out more about quality links have a look at this article on: the Official Google Webmaster Central Blog – https://webmasters.googleblog.com/2010/06/quality-links-to-your-site.html
So after seeing the keyword “blogging” is hard to rank for, what should you do? Well, this is where I use another free tool to even more quickly generate long tail variations. KWFinder does this as well, but not as quick. So I launch a tool called Ubersuggest . It is 100% free and no subscriptions required unlike keywordtool.io. So I input the keyword “blogging” into it and I search for a better long tail variation. I see one that catches my eye, “blogging away debt.”
3) Google: This is pretty straight forward but it’s the main reason I like it. I search for my main seed keyword in Google, and use the keywords that Google itself highlights in bold on the search results, plus the “Searches related to” section at the bottom to get keyword variations or LSI. That’s basically what Google is telling you that topic is about. No need for a thousands other tools. I use these to optimize the on page of my target pages as well.
SEMrush is a very useful tool for both researching competitors when starting a site or for growing an established site. I really like to find weaker niche sites that still seem to be ranking for lots of keywords; SEMrush helps me see what they are ranking for and what I can potentially target. You can also see what keywords you’re on the cusp of ranking for with your established site - another very useful feature.
However, this does not mean you cannot topple them. It just takes more of an effort in terms of content as your page has to build the trust. That is why you will see the "Google dance" happening for fresh content from a site that is not yet trusted or is not very authoritative. Google gives your page a chance and measures user click-throughs when it pushes you to certain spots in the SERPs and then measures user engagement levels when the traffic hit your site through those positions in the SERPs.