Keyword Cannibalization occurs when you have too many identical or similar keywords spread throughout the content on your website. As a result, a search engine like Google can't discern which content to rank higher. This means that sometimes it will give a higher ranking to the web page you don't mean to prioritize.
Your website is one of the most important aspects of your brand’s online presence and it's important that you design it right. It's also the place where you nurture your bottom-of-the-funnel leads to get conversions. It should be designed keeping in mind your audience and should ensure that it improves user experience.
In terms of SEO audit, Keyword Density is the percentage of times a keyword is used in the copy. And as such, it equates the number of words in a web copy — then divided by the number of times the keyword appears in a web copy.