@Xie Steven
Hi,
The difference between them is the update.
LTSC is designed for Windows 10 devices and use cases where the key requirement is that functionality and features don’t change over time.
To deliver on the commitment of no changes to features or functionality, a Windows 10 LTSC release does not contain any of the components of Windows 10 that may change over the life of the release. These components include Microsoft Edge (as a modern browser, it is constantly evolving to support the current modern browser web standards) as well as components/applications regularly updated via the Microsoft Store, such as Camera, Cortana, OneNote, and other modern apps that continue to advance with innovative improvements.
Internet Explorer is included in Windows 10 LTSC releases as its feature set is not changing, even though it will continue to get security fixes for the life of a Windows 10 LTSC release.
The other general Windows 10 devices in the Semi-Annual Channel receive twice-yearly feature updates, once in the spring and once in the fall. These updates contain new features, services, and other major changes. Security updates, optimizations, and other minor updates or patches are released every month thereafter.
For your reference:
https://techcommunity.microsoft.com/t5/windows-it-pro-blog/ltsc-what-is-it-and-when-should-it-be-used/ba-p/293181
Hope above information can help you.
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