WordPress websites use pages to create content that can be displayed using a menu. They are not collected together chronologically the way Posts are. Pages are what enable WordPress to be used to create regular websites. Way back when, there were just posts, and a WordPress blog by default displayed posts in order from newest to oldest.
WordPress has grown a lot, and blog sites are being used for all types of websites. A huge number of small businesses today choose WordPress to create their websites without needing a webmaster. The same software hosted on your own hosting account allows you complete flexibility with your website.