What is canonical?
The canonical tag is an HTML part used to avoid duplicate content. The canonical URL element suggests Google and other search engines to crawl a website, and what URL to index that specific page content under.
The canonical URL element important because URLs can have variations, based on a variety of factors, but be serving up the same or similar content.
For example, You have two pages that URLs like institute.html and institution.html, both have similar content, then Google confuses that which page gives the importance.
In that case, you should decide one page and put the canonical tag in both pages for Google. It will see that canonical tags and decide their importance.
Html Tag of Canonical
URL: <link rel=”canonical” href=”Domain Name” />
Finally, implementing canonical tags to help terminate issues of duplicate content is generally simple and can have a big impact on your SEO efforts.
When implemented properly, you can help cut down on duplicate content issues, you can pass link authority more efficiently between your pages, and search engines will get your site more proficiently. Help crawl, lastly leading to better rankings.