What is a Keyword?
A keyword is a word that will be set in your article a few times, not only once as that would make each word a keyword. When a spider sees that you have a word placed several times in an article, it will determine that your page may be useful to users that search for such a keyword.
Over Optimizing Your Articles
It is important to note that there is also such a thing as over optimizing your articles for particular words, this is known as “keyword stuffing”. When you stuff keywords in an article a spider will detect that you are trying to trick it into placing your article high in the search engine results for that word, and will instead penalize your site and your page for doing such. This may even affect the rankings of your other pages or get your site blacklisted from a particular search engine if you are found keyword stuffing too many times.
What is Keyword Density?
Keyword density is how many times your keyword is placed in your article. Most use a percentage to determine how many times they will put a keyword in an article. For instance, if you have a 500 word article and want to achieve a keyword density of 5%, then you will need to have the keyword in your article exactly 25 times. You can find hundreds of resources and guides recommending one keyword density over another and the reasons behind the logic, however, in the end you will have to determine which density is more profitable for your articles. Each webmaster as their own density that they like to achieve based on past results. As long as you don’t over optimize and you are making sufficient profit from your rankings, then you can choose whatever keyword density you like.
The Right Density
Regardless of what correct thickness you pick, it is critical to put keywords so that there are more toward the start and end to create a hour glass impact. Having the privilege keyword thickness in your article makes it more probable that you will profit off of that article since it will ascend in the internet searcher comes about and be seen by more individuals.