Forum Discussion
Subsites vs sites
- Jun 26, 2018
Take a look at SharePoint Hub Sites which allows you to connect multiple sites together (similar to the subsite concept). SharePoint Hub Sites give you a shared navigation, search across the hub and web parts to support rollup of news, associated sites and highlighted content
If you're a global or SharePoint admin in Office 365, you can convert any existing site (communication or team site) to a hub site using Microsoft PowerShell. Create a hub site in SharePoint Online
When a MS Team is created it creates a site collection (team site) which can them be connected to the hub sites Associate a SharePoint site with a hub site
You can also use a site design to automate the joining of a newly created site to an existing hub site by using the joinHub site script action. For info about how to create the site script and site design, see SharePoint site design and site script overview.
Hope this helps
Deleted
The short answer is that there is no difference between a SharePoint site and a SharePoint subsite. They are the same thing. I think the confusion originates because of the fact that in SharePoint you have the two terms used interchangeably, causing you to believe that there might be a difference between the two.
for more detail....
https://sharepointmaven.com/site-vs-subsite-sharepoint/