Two types of site maps are there. HTML & XML. HTML Sitemap is for the human & XML sitemap is for Robots. Both are related with the SEO.
Sitemap is a list of pages of a web site accessible to crawlers or users. It can be either a document in any form used as a planning tool for web design, or a web page that lists the pages on a web site, typically organized in hierarchical fashion. This helps visitors and search engine bots find pages on the site.
A sitemap is a top level view of your site, which navigate your site and shows all links related to your site.
Hey, There are two type of site maps HTML sitemap and XML sitemap HTML sitemap includes all URL of a website listed in proper manner. it helps users to search page in your website which they are looking for. XML sitemap is for Search engine robots to help them find number of URL in your website. Thanks