By subscribing to the feed of a website, readers can stay up to date with the most recent content on that site without having to visit it themselves to check if it has been updated.
WordPress includes a number of different RSS feeds:
Categories is one of two included taxonomies in WordPress, and it is used to sort posts by subject.
or a tag. What URL the taxonomy feed has depends on your permalink structure, but you can usually reach the feed for any term by going to the archive page for that term and appending
/feed/ to the URL in your browser address bar.
/feed/to the URL in your browser address bar.
&feed=rss2to the URL in your browser address bar.
WordPress includes an RSS widget which can be used to display the latest updates from another websites RSS feed. If your active theme supports widgets, you can add the widget to your website by going to Appearance → Widgets, where you drag the RSS widget to a widget area and enter the details of the RSS feed you wish to display.