Let's take a look at the basic structure of SharePoint:
SharePoint sites. Simply put, a SharePoint site is a box that contains your lists and document libraries. Several boxes, i.e. sites, that are related to each other by structure constitute a site collection. Site collections are typically connected to a hub.
SharePoint pages. SharePoint pages are used to display content (text, images, hyperlinks, lists, etc) to users. This content can be organized in any way the page creator chooses. You can have many different pages on a SharePoint site. If you need more space to display your content, you can create more pages.
SharePoint lists. A SharePoint list is a set of content that has a specific structure, similar to a table, spreadsheet or database. SharePoint offers many templates to create different types of lists like calendars, discussion boards, etc.
SharePoint libraries. A SharePoint library is a container that stores documents or files. Here you can create, organize and manage your files, as well as share them with other users.
SharePoint hub sites. A SharePoint hub site is a hub for the sites and content of an organization, group, or individual using SharePoint. Hub sites are critical to creating an internal network for your team or company.